diff --git a/src/main/java/spoon/support/reflect/reference/CtTypeParameterReferenceImpl.java b/src/main/java/spoon/support/reflect/reference/CtTypeParameterReferenceImpl.java
index 0fe88f8f601..9b57cb71be4 100644
--- a/src/main/java/spoon/support/reflect/reference/CtTypeParameterReferenceImpl.java
+++ b/src/main/java/spoon/support/reflect/reference/CtTypeParameterReferenceImpl.java
@@ -227,7 +227,7 @@ public CtTypeReference<?> getTypeErasure() {
 
 	@Override
 	public boolean isSubtypeOf(CtTypeReference<?> type) {
-		return getDeclaration().isSubtypeOf(type);
+		return getTypeDeclaration().isSubtypeOf(type);
 	}
 
 	@Override