diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6545bf6..f3f1e39 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+## 0.4.2  (July 6, 2022)
+- Fix a bug if an undefined symbol crashes the validator
+
 ## 0.4.1  (July 5, 2022)
 - Fix a bug when using custom keywords for semantic highlighting
 
diff --git a/package.json b/package.json
index 2041496..ae5d746 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
 	"name": "macro-executor",
 	"displayName": "Macro Executor Language",
 	"description": "Fanuc Macro-Executor Programming Language",
-	"version": "0.4.1",
+	"version": "0.4.2",
 	"author": "iSorp",
 	"publisher": "iSorp",
 	"license": "MIT",
@@ -103,6 +103,11 @@
 				"command": "macro.action.addsequeces",
 				"title": "%macro.action.addsequeces%",
 				"category": "Macro"
+			},
+			{
+				"command": "macro.validate.workspace",
+				"title": "%macro.validate.workspace%",
+				"category": "Macro"
 			}
 		],
 		"menus": {
diff --git a/server/src/macroLanguageService/parser/macroNodes.ts b/server/src/macroLanguageService/parser/macroNodes.ts
index 9147b4a..114a78d 100644
--- a/server/src/macroLanguageService/parser/macroNodes.ts
+++ b/server/src/macroLanguageService/parser/macroNodes.ts
@@ -573,7 +573,8 @@ export class DefReference extends Reference {
 	}
 
 	public getNonSymbolText(): string {
-		return this.definition?.value?.getText();
+		return this.definition?.value?.getText() ?? ''
+		;
 	}
 }