diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/GNUCPPSourceParser.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/GNUCPPSourceParser.java
index 00d36d76c40..ed31b571bd7 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/GNUCPPSourceParser.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/GNUCPPSourceParser.java
@@ -2008,7 +2008,8 @@ public class GNUCPPSourceParser extends AbstractGNUSourceCodeParser {
 		
 		ICPPASTTypeId aliasedType = typeId(DeclarationOptions.TYPEID);
 		
-		if (LT(1) != IToken.tSEMI){
+		final int nextToken = LT(1);
+		if (nextToken != IToken.tSEMI && nextToken != IToken.tEOC){
 			throw backtrack;
 		}
 		int endOffset = consume().getEndOffset();
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 5d2ba9620b0..01e804f022f 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
@@ -1367,4 +1367,10 @@ public class CompletionTests extends AbstractContentAssistTest {
 		final String[] expected = { "Specialization<typename T1, typename T2>" };
 		assertContentAssistResults(fCursorOffset, expected, true, COMPARE_ID_STRINGS);
 	}
-}
\ No newline at end of file
+
+	//	using Alias = C/*cursor*/
+	public void testAliasDeclarationCompletion() throws Exception {
+		final String[] expectedID = { "C1", "C2", "C3" };
+		assertContentAssistResults(fCursorOffset, expectedID, true, COMPARE_ID_STRINGS);
+	}
+}