diff --git a/xwiki-platform-core/xwiki-platform-rendering/xwiki-platform-rendering-xwiki/src/main/java/org/xwiki/rendering/internal/resolver/AbstractResourceReferenceEntityReferenceResolver.java b/xwiki-platform-core/xwiki-platform-rendering/xwiki-platform-rendering-xwiki/src/main/java/org/xwiki/rendering/internal/resolver/AbstractResourceReferenceEntityReferenceResolver.java
index 831b44cafafe..eb38594752a8 100644
--- a/xwiki-platform-core/xwiki-platform-rendering/xwiki-platform-rendering-xwiki/src/main/java/org/xwiki/rendering/internal/resolver/AbstractResourceReferenceEntityReferenceResolver.java
+++ b/xwiki-platform-core/xwiki-platform-rendering/xwiki-platform-rendering-xwiki/src/main/java/org/xwiki/rendering/internal/resolver/AbstractResourceReferenceEntityReferenceResolver.java
@@ -186,7 +186,7 @@ protected DocumentReference resolveDocumentReference(EntityReference sourceRefer
                 new SpaceReference(reference.getName(), (SpaceReference) reference.getParent());
             finalReference = new DocumentReference(defaultDocumentName, spaceReference);
 
-            if (trySpaceSibling
+            if (sourceReference != null && trySpaceSibling
                 && trySpaceSiblingFallback(sourceReference, finalReference, baseReference, defaultDocumentName)) {
                 // Try as a space sibling.
                 DocumentReference siblingReference =
diff --git a/xwiki-platform-core/xwiki-platform-rendering/xwiki-platform-rendering-xwiki/src/test/java/org/xwiki/rendering/internal/resolver/DefaultResourceReferenceEntityReferenceResolverTest.java b/xwiki-platform-core/xwiki-platform-rendering/xwiki-platform-rendering-xwiki/src/test/java/org/xwiki/rendering/internal/resolver/DefaultResourceReferenceEntityReferenceResolverTest.java
index 9c18dae0c465..29c5e578334f 100644
--- a/xwiki-platform-core/xwiki-platform-rendering/xwiki-platform-rendering-xwiki/src/test/java/org/xwiki/rendering/internal/resolver/DefaultResourceReferenceEntityReferenceResolverTest.java
+++ b/xwiki-platform-core/xwiki-platform-rendering/xwiki-platform-rendering-xwiki/src/test/java/org/xwiki/rendering/internal/resolver/DefaultResourceReferenceEntityReferenceResolverTest.java
@@ -248,6 +248,13 @@ public void resolveUntypeDocument() throws ComponentLookupException
         assertEquals(new DocumentReference(CURRENT_WIKI, CURRENT_SPACE, PAGE),
             this.mocker.getComponentUnderTest().resolve(documentResource(PAGE, false), null));
 
+        // When the reference cannot be parsed by the relative resolver
+
+        assertEquals(
+            new DocumentReference(CURRENT_WIKI,
+                Arrays.asList(CURRENT_SPACE, CURRENT_SPACE, CURRENT_SPACE, CURRENT_PAGE), DEFAULT_PAGE),
+            this.mocker.getComponentUnderTest().resolve(documentResource("...", false), null));
+
         // When the page is current page
 
         assertEquals(new DocumentReference(CURRENT_WIKI, CURRENT_SPACE, CURRENT_PAGE),