diff --git a/plugins/c9.ide.language/language.js b/plugins/c9.ide.language/language.js
index 84092300a..ac3d53b61 100644
--- a/plugins/c9.ide.language/language.js
+++ b/plugins/c9.ide.language/language.js
@@ -256,7 +256,7 @@ define(function(require, exports, module) {
                     ["enterCompletion", true]
                 ]);
                 settings.setDefaults("project/language", [
-                    ["warnLevel", "info"],
+                    ["warnLevel", "error"],
                     ["undeclaredVars", true],
                     ["eslintrc", true],
                     ["semi", true],
@@ -713,4 +713,4 @@ define(function(require, exports, module) {
         
         register(null, { language: plugin });
     }
-});
\ No newline at end of file
+});