diff --git a/modules/core/src/compiler/interfaces.js b/modules/core/src/compiler/interfaces.js
index 22b6f5ea2c..e4c2d71e34 100644
--- a/modules/core/src/compiler/interfaces.js
+++ b/modules/core/src/compiler/interfaces.js
@@ -1,5 +1,5 @@
 export class OnChange {
   onChange(changes) {
-    throw "not implemented";
+    throw "OnChange.onChange is not implemented";
   }
-}
\ No newline at end of file
+}