diff --git a/lib/ace/mode/lsl_highlight_rules.js b/lib/ace/mode/lsl_highlight_rules.js
index 23f0ce89..d9d5169e 100644
--- a/lib/ace/mode/lsl_highlight_rules.js
+++ b/lib/ace/mode/lsl_highlight_rules.js
@@ -307,7 +307,7 @@ var keywordMapper = this.createKeywordMapper({
                 regex : "[a-zA-Z_$][a-zA-Z0-9_$]*\\b"
             }, {
                 token : "keyword.operator",
-                regex : "[!%<>=*+\\-\\/]=?|<<|>>|&|&&|\\+\\+|\\-\\-|\\||\\|\\||^|~"
+                regex : "[!%<>=*\\+\\-\\/]=?|<<|>>|&|&&|\\+\\+|\\-\\-|\\||\\|\\||^|~"
             }, {
                 token : "punctuation.operator",
                 regex : "\\?|\\:|\\,|\\;|\\."