diff --git a/app/javascript/packs/codemirror.js b/app/javascript/packs/codemirror.js
index 10ed751..f55c907 100644
--- a/app/javascript/packs/codemirror.js
+++ b/app/javascript/packs/codemirror.js
@@ -26,33 +26,27 @@ CodeMirror.defineMode("fluentd", function(){
       case "#":
         stream.skipToEnd();
         return "comment";
-        break;
       case "<":
         state.context = "inner-bracket";
         stream.pos += 1;
         return "keyword";
-        break;
       case ">":
         stream.pos += 1;
         state.context = "inner-definition";
         return "keyword";
-        break;
       default:
         switch(state.context){
         case "inner-bracket":
           stream.eat(/[^#<>]+/);
           return "keyword";
-          break;
         case "inner-definition":
           var key = stream.eatWhile(/[^ \t#]/);
           state.context =  "inner-definition-keyword-appeared";
           return "variable";
-          break;
         case "inner-definition-keyword-appeared":
           var key = stream.eatWhile(/[^#]/);
           state.context = "inner-definition";
           return "builtin";
-          break;
         default:
           stream.eat(/[^<>#]+/);
           return "string";