diff --git a/lib/ace/mode/latex_highlight_rules.js b/lib/ace/mode/latex_highlight_rules.js
index a3345322..05a77c89 100644
--- a/lib/ace/mode/latex_highlight_rules.js
+++ b/lib/ace/mode/latex_highlight_rules.js
@@ -56,6 +56,10 @@ var LatexHighlightRules = function() {
         },{
             token : "constant.character.escape",
             regex : "\\\\(?:[^a-zA-Z]|[a-zA-Z]+)"
+        },{
+            token : "error", 
+            regex : "^\\s*$", 
+            next : "start" 
         },{
             defaultToken : "string"
         }]