diff --git a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2TemplateTests.java b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2TemplateTests.java
index 8ea14a808a7..48afbbfb40b 100644
--- a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2TemplateTests.java
+++ b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2TemplateTests.java
@@ -10328,4 +10328,21 @@ public class AST2TemplateTests extends AST2CPPTestBase {
 		// Check that the TypeOfDependentExpression instantiated to the correct type.
 		helper.assertVariableValue("waldo", 42);
 	}
+	
+	//	template <class>
+	//	struct A {
+	//	    template <class>
+	//	    struct B {
+	//	        enum { val = 0 };
+	//	    };
+	//	};
+	//
+	//	template <class X>
+	//	struct C {
+	//	    struct D : A<X> {};
+	//	    enum { val = D::template B<X>::val };
+	//	};
+	public void testMemberOfUnknownMemberClass_519819() throws Exception {
+		parseAndCheckBindings();
+	}
 }
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/semantics/CPPSemantics.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/semantics/CPPSemantics.java
index 80ad5bebfbb..9b624e67ecc 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/semantics/CPPSemantics.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/semantics/CPPSemantics.java
@@ -498,10 +498,13 @@ public class CPPSemantics {
 			name= (ICPPASTTemplateId) nameParent;
 			nameParent= name.getParent();
 		}
+		boolean isNestedNameSpecifier = false;
 		if (nameParent instanceof ICPPASTQualifiedName) {
 			if (name == ((ICPPASTQualifiedName) nameParent).getLastName()) {
 				name= (IASTName) nameParent;
 				nameParent= name.getParent();
+			} else {
+				isNestedNameSpecifier = true;
 			}
 		}
 
@@ -509,7 +512,7 @@ public class CPPSemantics {
 		// binding.
 		final ASTNodeProperty namePropertyInParent = name.getPropertyInParent();
 		if (binding == null && data.skippedScope != null) {
-			if (namePropertyInParent == IASTNamedTypeSpecifier.NAME) {
+			if (isNestedNameSpecifier || namePropertyInParent == IASTNamedTypeSpecifier.NAME) {
 				binding= new CPPUnknownMemberClass(data.skippedScope, name.getSimpleID());
 			} else if (data.isFunctionCall()) {
 				binding= new CPPUnknownMethod(data.skippedScope, name.getSimpleID());