diff --git a/test/default/cmptest.h b/test/default/cmptest.h
index 79de928e..e3710af9 100644
--- a/test/default/cmptest.h
+++ b/test/default/cmptest.h
@@ -153,6 +153,7 @@ int main(void)
     return 0;
 }
 
+#undef  printf
 #define printf(...) do { } while(0)
 
 #elif !defined(BROWSER_TESTS)