diff --git a/Examples/test-suite/php_namewarn_rename.i b/Examples/test-suite/php_namewarn_rename.i
index de8a62501..d84e2196f 100644
--- a/Examples/test-suite/php_namewarn_rename.i
+++ b/Examples/test-suite/php_namewarn_rename.i
@@ -32,8 +32,8 @@
   };
 
   struct prev {
-    prev & operator++() { }
-    prev operator++(int) { }
+    prev & operator++() { return *this; }
+    prev operator++(int) { return *this; }
   };
 
 %}