diff --git a/qute.ls/com.redhat.qute.ls/src/main/java/com/redhat/qute/parser/expression/scanner/ExpressionScanner.java b/qute.ls/com.redhat.qute.ls/src/main/java/com/redhat/qute/parser/expression/scanner/ExpressionScanner.java
index afcfd4bff..eae15e4cb 100644
--- a/qute.ls/com.redhat.qute.ls/src/main/java/com/redhat/qute/parser/expression/scanner/ExpressionScanner.java
+++ b/qute.ls/com.redhat.qute.ls/src/main/java/com/redhat/qute/parser/expression/scanner/ExpressionScanner.java
@@ -19,8 +19,8 @@
 public class ExpressionScanner extends AbstractScanner<TokenType, ScannerState> {
 
 	private static final int[] QUOTE_OR_PAREN = new int[] { '(', ')', '"', '\'', };
-	private static final int[] SPACE_PERIOD_LBRACKET = new int[] {' ', '.', '['};
-	private static final int[] SPACE_PERIOD_LBRACKET_LPAREN_COLON = new int[] {' ', '.', '[', '(', ':'};
+	private static final int[] SPACE_PERIOD_LBRACKET = new int[] { ' ', '.', '[' };
+	private static final int[] SPACE_PERIOD_LBRACKET_LPAREN_COLON = new int[] { ' ', '.', '[', '(', ':' };
 
 	public static ExpressionScanner createScanner(String input, boolean canSupportInfixNotation) {
 		return createScanner(input, canSupportInfixNotation, 0, input.length());
@@ -62,97 +62,105 @@ protected TokenType internalScan() {
 		String errorMessage = null;
 		switch (state) {
 
-		case WithinExpression: {
-			if (stream.skipWhitespace()) {
-				return finishToken(offset, TokenType.Whitespace);
-			}
-			if (!canSupportInfixNotation) {
-				if (stream.advanceIfChar('"') || stream.advanceIfChar('\'')) {
-					state = ScannerState.WithinString;
-					return finishToken(stream.pos() - 1, TokenType.StartString);
+			case WithinExpression: {
+				if (stream.skipWhitespace()) {
+					return finishToken(offset, TokenType.Whitespace);
 				}
+				if (!canSupportInfixNotation) {
+					if (stream.advanceIfChar('"') || stream.advanceIfChar('\'')) {
+						state = ScannerState.WithinString;
+						return finishToken(stream.pos() - 1, TokenType.StartString);
+					}
+				}
+				nextJavaIdentifierPart();
+				return finishTokenPart(offset);
 			}
-			nextJavaIdentifierPart();
-			return finishTokenPart(offset);
-		}
 
-		case WithinParts:
-		case AfterNamespace: {
-			if (stream.skipWhitespace()) {
-				nbParts++;
-				return finishToken(offset, TokenType.Whitespace);
-			}
-			if (!canSupportInfixNotation) {
-				if (stream.advanceIfChar('"') || stream.advanceIfChar('\'')) {
-					state = ScannerState.WithinString;
-					return finishToken(stream.pos() - 1, TokenType.StartString);
+			case WithinParts:
+			case AfterNamespace: {
+				if (stream.skipWhitespace()) {
+					nbParts++;
+					return finishToken(offset, TokenType.Whitespace);
 				}
-			}
-			if (stream.advanceIfChar('.')) {
-				// item.|
-				return finishToken(offset, TokenType.Dot);
-			}
-			if (stream.advanceIfChar('[')) {
-				// item[|
-				if (stream.advanceUntilChar(']')) {
-					stream.advance(1);
-					// item['name']|
+				if (!canSupportInfixNotation) {
+					if (stream.advanceIfChar('"') || stream.advanceIfChar('\'')) {
+						state = ScannerState.WithinString;
+						return finishToken(stream.pos() - 1, TokenType.StartString);
+					}
 				}
-				return finishToken(offset, TokenType.PropertyPart);
-			}
-			if (stream.advanceIfChar(':')) {
-				// data:|
-				return finishToken(offset, TokenType.ColonSpace);
+				if (state == ScannerState.AfterNamespace) {
+					if (stream.peekChar() == '"' || stream.peekChar() == '\'') {
+						// config:"
+						stream.advance(1);
+						state = ScannerState.WithinString;
+						return finishToken(stream.pos() - 1, TokenType.StartString);
+					}
+				}
+				if (stream.advanceIfChar('.')) {
+					// item.|
+					return finishToken(offset, TokenType.Dot);
+				}
+				if (stream.advanceIfChar('[')) {
+					// item[|
+					if (stream.advanceUntilChar(']')) {
+						stream.advance(1);
+						// item['name']|
+					}
+					return finishToken(offset, TokenType.PropertyPart);
+				}
+				if (stream.advanceIfChar(':')) {
+					// data:|
+					return finishToken(offset, TokenType.ColonSpace);
+				}
+				nextJavaIdentifierPart();
+				// item.name|
+				return finishTokenPart(offset);
 			}
-			nextJavaIdentifierPart();
-			// item.name|
-			return finishTokenPart(offset);
-		}
 
-		case WithinMethod: {
-			if (stream.advanceIfChar('(')) {
-				bracket++;
-				return finishToken(offset, TokenType.OpenBracket);
-			}
-			stream.advanceUntilChar(QUOTE_OR_PAREN);
-			if (stream.peekChar() == '(') {
-				stream.advance(1);
-				bracket++;
-				return internalScan();
-			}
-			if (stream.peekChar() == '"' || stream.peekChar() == '\'') {
-				stream.advance(1);
-				state = ScannerState.WithinString;
-				inMethod = true;
-				return finishToken(stream.pos() - 1, TokenType.StartString);
-			} else if (stream.peekChar() == ')') {
-				stream.advance(1);
-				bracket--;
-				if (bracket > 0) {
+			case WithinMethod: {
+				if (stream.advanceIfChar('(')) {
+					bracket++;
+					return finishToken(offset, TokenType.OpenBracket);
+				}
+				stream.advanceUntilChar(QUOTE_OR_PAREN);
+				if (stream.peekChar() == '(') {
+					stream.advance(1);
+					bracket++;
 					return internalScan();
 				}
-				state = ScannerState.WithinParts;
-				inMethod = false;
-				return finishToken(stream.pos() - 1, TokenType.CloseBracket);
+				if (stream.peekChar() == '"' || stream.peekChar() == '\'') {
+					stream.advance(1);
+					state = ScannerState.WithinString;
+					inMethod = true;
+					return finishToken(stream.pos() - 1, TokenType.StartString);
+				} else if (stream.peekChar() == ')') {
+					stream.advance(1);
+					bracket--;
+					if (bracket > 0) {
+						return internalScan();
+					}
+					state = ScannerState.WithinParts;
+					inMethod = false;
+					return finishToken(stream.pos() - 1, TokenType.CloseBracket);
+				}
+				return internalScan();
 			}
-			return internalScan();
-		}
 
-		case WithinString: {
-			if (stream.advanceIfAnyOfChars(QUOTE_C)) {
-				if (inMethod) {
-					state = ScannerState.WithinMethod;
-				} else {
-					state = ScannerState.WithinExpression;
+			case WithinString: {
+				if (stream.advanceIfAnyOfChars(QUOTE_C)) {
+					if (inMethod) {
+						state = ScannerState.WithinMethod;
+					} else {
+						state = ScannerState.WithinExpression;
+					}
+					return finishToken(offset, TokenType.EndString);
 				}
-				return finishToken(offset, TokenType.EndString);
+				stream.advanceUntilChar(QUOTE);
+				return finishToken(offset, TokenType.String);
 			}
-			stream.advanceUntilChar(QUOTE);
-			return finishToken(offset, TokenType.String);
-		}
 
-		default:
-			inMethod = false;
+			default:
+				inMethod = false;
 		}
 		stream.advance(1);
 		return finishToken(offset, TokenType.Unknown, errorMessage);
diff --git a/qute.ls/com.redhat.qute.ls/src/test/java/com/redhat/qute/parser/expression/scanner/ExpressionScannerTest.java b/qute.ls/com.redhat.qute.ls/src/test/java/com/redhat/qute/parser/expression/scanner/ExpressionScannerTest.java
index 187b3d00a..5262776bd 100644
--- a/qute.ls/com.redhat.qute.ls/src/test/java/com/redhat/qute/parser/expression/scanner/ExpressionScannerTest.java
+++ b/qute.ls/com.redhat.qute.ls/src/test/java/com/redhat/qute/parser/expression/scanner/ExpressionScannerTest.java
@@ -67,7 +67,7 @@ public void testObjectAndMethodPartWithParameters() {
 		assertOffsetAndToken(25, TokenType.CloseBracket, ")");
 		assertOffsetAndToken(26, TokenType.EOS, "");
 	}
-	
+
 	@Test
 	public void testNamespaceStartWithObject() {
 		scanner = createInfixNotationScanner("data:foo");
@@ -127,6 +127,17 @@ public void testNamespaceWithMethodAndProperty() {
 		assertOffsetAndToken(18, TokenType.EOS, "");
 	}
 
+	@Test
+	public void configNamespaceWithString() {
+		scanner = createInfixNotationScanner("config:\"quarkus.application.name\"");
+		assertOffsetAndToken(0, TokenType.NamespacePart, "config");
+		assertOffsetAndToken(6, TokenType.ColonSpace, ":");
+		assertOffsetAndToken(7, TokenType.StartString, "\"");
+		assertOffsetAndToken(8, TokenType.String, "quarkus.application.name");
+		assertOffsetAndToken(32, TokenType.EndString, "\"");
+		assertOffsetAndToken(33, TokenType.EOS, "");
+	}
+
 	/**
 	 * @see https://quarkus.io/guides/qute-reference#built-in-resolvers
 	 */
@@ -155,7 +166,7 @@ public void underscore() {
 	}
 
 	// Infix notation tests
-	
+
 	@Test
 	public void testTwoPartsWithInfixNotation() {
 		scanner = createInfixNotationScanner("a b");
@@ -173,7 +184,7 @@ public void testTwoPartsWithoutInfixNotation() {
 		assertOffsetAndToken(2, TokenType.ObjectPart, "b"); // No infix notation -> object part
 		assertOffsetAndToken(3, TokenType.EOS, "");
 	}
-	
+
 	@Test
 	public void testThreePartsWithInfixNotation() {
 		scanner = createInfixNotationScanner("a b c");
@@ -184,7 +195,7 @@ public void testThreePartsWithInfixNotation() {
 		assertOffsetAndToken(4, TokenType.InfixParameter, "c");
 		assertOffsetAndToken(5, TokenType.EOS, "");
 	}
-	
+
 	@Test
 	public void testSeveralPartsWithInfixNotation() {
 		scanner = createInfixNotationScanner("a b c d e");
@@ -199,7 +210,7 @@ public void testSeveralPartsWithInfixNotation() {
 		assertOffsetAndToken(8, TokenType.InfixParameter, "e");
 		assertOffsetAndToken(9, TokenType.EOS, "");
 	}
-	
+
 	@Test
 	public void testThreePartsWithoutInfixNotation() {
 		scanner = createNoInfixNotationScanner("a b c");
@@ -210,7 +221,7 @@ public void testThreePartsWithoutInfixNotation() {
 		assertOffsetAndToken(4, TokenType.ObjectPart, "c");
 		assertOffsetAndToken(5, TokenType.EOS, "");
 	}
-	
+
 	@Test
 	public void testOrInfixNotation() {
 		scanner = createInfixNotationScanner("person.name or 'John'");
@@ -223,7 +234,7 @@ public void testOrInfixNotation() {
 		assertOffsetAndToken(15, TokenType.InfixParameter, "'John'");
 		assertOffsetAndToken(21, TokenType.EOS, "");
 	}
-	
+
 	@Test
 	public void testCharAtInfixNotation() {
 		scanner = createInfixNotationScanner("foo charAt '1'");
@@ -234,7 +245,7 @@ public void testCharAtInfixNotation() {
 		assertOffsetAndToken(11, TokenType.InfixParameter, "'1'");
 		assertOffsetAndToken(14, TokenType.EOS, "");
 	}
-	
+
 	@Test
 	public void testCharAtNoInfixNotation() {
 		scanner = createNoInfixNotationScanner("foo charAt '1'");
@@ -247,7 +258,7 @@ public void testCharAtNoInfixNotation() {
 		assertOffsetAndToken(13, TokenType.EndString, "'");
 		assertOffsetAndToken(14, TokenType.EOS, "");
 	}
-	
+
 	@Test
 	public void testMethodsAndInfixNotation() {
 		scanner = createInfixNotationScanner("items.get(0) or 1");
@@ -262,7 +273,7 @@ public void testMethodsAndInfixNotation() {
 		assertOffsetAndToken(16, TokenType.InfixParameter, "1");
 		assertOffsetAndToken(17, TokenType.EOS, "");
 	}
-	
+
 	@Test
 	public void dotSpace() {
 		scanner = createInfixNotationScanner("items. ");
@@ -271,7 +282,7 @@ public void dotSpace() {
 		assertOffsetAndToken(6, TokenType.Whitespace, " ");
 		assertOffsetAndToken(7, TokenType.EOS, "");
 	}
-	
+
 	@Test
 	public void twoMethodsWithOr() {
 		scanner = createInfixNotationScanner("item.name or item.name");
@@ -284,7 +295,7 @@ public void twoMethodsWithOr() {
 		assertOffsetAndToken(13, TokenType.InfixParameter, "item.name");
 		assertOffsetAndToken(22, TokenType.EOS, "");
 	}
-	
+
 	@Test
 	public void infixNotationWithBracket() {
 		scanner = createInfixNotationScanner("foo getBytes()");
@@ -304,7 +315,7 @@ public void elvisOperator() {
 		assertOffsetAndToken(8, TokenType.InfixParameter, "\"Quarkus Insights\"");
 		assertOffsetAndToken(26, TokenType.EOS, "");
 	}
-	
+
 	private void assertOffsetAndToken(int tokenOffset, TokenType tokenType, String tokenText) {
 		TokenType token = scanner.scan();
 		assertEquals(tokenOffset, scanner.getTokenOffset());
@@ -315,7 +326,7 @@ private void assertOffsetAndToken(int tokenOffset, TokenType tokenType, String t
 	private ExpressionScanner createInfixNotationScanner(String input) {
 		return ExpressionScanner.createScanner(input, true);
 	}
-	
+
 	private ExpressionScanner createNoInfixNotationScanner(String input) {
 		return ExpressionScanner.createScanner(input, false);
 	}
diff --git a/qute.ls/com.redhat.qute.ls/src/test/java/com/redhat/qute/services/diagnostics/QuteDiagnosticsInExpressionTest.java b/qute.ls/com.redhat.qute.ls/src/test/java/com/redhat/qute/services/diagnostics/QuteDiagnosticsInExpressionTest.java
index dfb2eda1e..e665fb512 100644
--- a/qute.ls/com.redhat.qute.ls/src/test/java/com/redhat/qute/services/diagnostics/QuteDiagnosticsInExpressionTest.java
+++ b/qute.ls/com.redhat.qute.ls/src/test/java/com/redhat/qute/services/diagnostics/QuteDiagnosticsInExpressionTest.java
@@ -690,4 +690,11 @@ public void escape() throws Exception {
 		String template = "function gtag()\\{dataLayer.push(arguments);\\}";
 		testDiagnosticsFor(template);
 	}
+	
+	@Test
+	public void configNamepscaeWithString() throws Exception {
+		String template = "{config:\"quarkus.application.name\"}";
+		testDiagnosticsFor(template);
+	}
+	
 }