diff --git a/lib/ace/mode/_test/tokens_dart.json b/lib/ace/mode/_test/tokens_dart.json
index 5964791a..37cdc323 100644
--- a/lib/ace/mode/_test/tokens_dart.json
+++ b/lib/ace/mode/_test/tokens_dart.json
@@ -330,7 +330,7 @@
   ["text",";"]
 ],[
    "start",
-  ["identifier","assert"],
+  ["keyword.control.dart","assert"],
   ["text","("],
   ["identifier","unicorn"],
   ["text"," "],
@@ -357,7 +357,7 @@
   ["text",";"]
 ],[
    "start",
-  ["identifier","assert"],
+  ["keyword.control.dart","assert"],
   ["text","("],
   ["identifier","iMeantToDoThis"],
   ["text","."],
diff --git a/lib/ace/mode/dart_highlight_rules.js b/lib/ace/mode/dart_highlight_rules.js
index ea49ca70..556150c3 100644
--- a/lib/ace/mode/dart_highlight_rules.js
+++ b/lib/ace/mode/dart_highlight_rules.js
@@ -12,7 +12,7 @@ var DartHighlightRules = function() {
 
     var constantLanguage = "true|false|null";
     var variableLanguage = "this|super";
-    var keywordControl = "try|catch|finally|throw|break|case|continue|default|do|else|for|if|in|return|switch|while|new";
+    var keywordControl = "try|catch|finally|throw|assert|break|case|continue|default|do|else|for|if|in|return|switch|while|new";
     var keywordDeclaration = "abstract|class|extends|external|factory|implements|get|native|operator|set|typedef|with";
     var storageModifier = "static|final|const";
     var storageType = "void|bool|num|int|double|dynamic|var|String";