diff --git a/lib/ace/ext/language_tools.js b/lib/ace/ext/language_tools.js
index dac2075c..4edbf170 100644
--- a/lib/ace/ext/language_tools.js
+++ b/lib/ace/ext/language_tools.js
@@ -67,17 +67,12 @@ var snippetCompleter = {
     }
 };
 
+var completers = [snippetCompleter, textCompleter, keyWordCompleter];
 // Allows default completers to be removed or replaced with a explict set of completers
 // A null argument here will result in an empty completer array, not a null attribute
 exports.setCompleters = function(val) {
-    if (val == null || val == undefined || (!(val instanceof Array)) ) {
-        completers = [];
-    } else {
-        completers = val;
-    }
+    completers = val || [];
 };
-
-var completers = [snippetCompleter, textCompleter, keyWordCompleter];
 exports.addCompleter = function(completer) {
     completers.push(completer);
 };