diff --git a/lib/ace/mode/rust.js b/lib/ace/mode/rust.js
index 03570e4a..28485e97 100644
--- a/lib/ace/mode/rust.js
+++ b/lib/ace/mode/rust.js
@@ -53,10 +53,10 @@ var Mode = function() {
 oop.inherits(Mode, TextMode);
 
 (function() {
-    this.lineCommentStart = "/\\*";
+    this.lineCommentStart = "//";
     this.blockComment = {start: "/*", end: "*/"};
     this.$id = "ace/mode/rust";
 }).call(Mode.prototype);
 
 exports.Mode = Mode;
-});
\ No newline at end of file
+});