diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTQualifiedName.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTQualifiedName.java
index 7d26fc5f33a..8679f34d328 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTQualifiedName.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTQualifiedName.java
@@ -314,8 +314,9 @@ public class CPPASTQualifiedName extends CPPASTNameBase
 		ICPPClassType classQualifier = getClassQualifier();
 		if (classQualifier != null) {
 			final boolean isDeclaration = getParent().getParent() instanceof IASTSimpleDeclaration;
+			final boolean isUsingDecl = getParent() instanceof ICPPASTUsingDeclaration;
 			List<IBinding> filtered = filterClassScopeBindings(classQualifier, bindings, isDeclaration);
-			if (isDeclaration && nameMatches(classQualifier.getNameCharArray(),
+			if ((isDeclaration || isUsingDecl) && nameMatches(classQualifier.getNameCharArray(),
 					n.getLookupKey(), isPrefix)) {
 				ICPPConstructor[] constructors = ClassTypeHelper.getConstructors(classQualifier, n);
 				for (int i = 0; i < constructors.length; i++) {
diff --git a/core/org.eclipse.cdt.ui.tests/ui/org/eclipse/cdt/ui/tests/text/contentassist2/CompletionTests.java b/core/org.eclipse.cdt.ui.tests/ui/org/eclipse/cdt/ui/tests/text/contentassist2/CompletionTests.java
index d08b56dbee6..5332a111334 100644
--- a/core/org.eclipse.cdt.ui.tests/ui/org/eclipse/cdt/ui/tests/text/contentassist2/CompletionTests.java
+++ b/core/org.eclipse.cdt.ui.tests/ui/org/eclipse/cdt/ui/tests/text/contentassist2/CompletionTests.java
@@ -1868,4 +1868,14 @@ public class CompletionTests extends CompletionTestBase {
 	public void testExistingParens_72391() throws Exception {
 		assertCompletionResults(new String[] { "waldo" });  // expect no parens in replacement
 	}
+
+	//	struct A{
+	//	    A(int,int);
+	//	};
+	//	struct B: A{
+	//	    using A::/*cursor*/
+	//	};
+	public void testInheritingConstructor_511653() throws Exception {
+		assertCompletionResults(new String[] { "A;" });
+	}
 }