diff --git a/lib/ace/mode/latex_highlight_rules.js b/lib/ace/mode/latex_highlight_rules.js
index 931534ed..f3238bfb 100644
--- a/lib/ace/mode/latex_highlight_rules.js
+++ b/lib/ace/mode/latex_highlight_rules.js
@@ -14,15 +14,15 @@ var LatexHighlightRules = function() {
             regex : "%.*$"
         }, {
             // Documentclass and usepackage
-            token : ["keyword","lparen","variable.parameter","rparen", "lparen","storage.type","rparen"],
+            token : ["keyword", "lparen", "variable.parameter", "rparen", "lparen", "storage.type", "rparen"],
             regex : "(\\\\(?:documentclass|usepackage|input))(?:(\\[)([^\\]]*)(\\]))?({)([^}]*)(})"
         }, {
             // A label
-            token : ["keyword","lparen","variable.parameter","rparen"],
+            token : ["keyword","lparen", "variable.parameter", "rparen"],
             regex : "(\\\\label)(?:({)([^}]*)(}))?"
         }, {
             // A block
-            token : ["storage.type", "lparen","variable.parameter","rparen"],
+            token : ["storage.type", "lparen", "variable.parameter", "rparen"],
             regex : "(\\\\(?:begin|end))({)(\\w*)(})"
         }, {
             // A tex command e.g. \foo