diff --git a/CodenameOne/src/com/codename1/javascript/JavascriptContext.java b/CodenameOne/src/com/codename1/javascript/JavascriptContext.java
index a5623988fe..322f836542 100644
--- a/CodenameOne/src/com/codename1/javascript/JavascriptContext.java
+++ b/CodenameOne/src/com/codename1/javascript/JavascriptContext.java
@@ -260,10 +260,10 @@ private synchronized String exec(String js, boolean async){
         }
         if (async) {
             
-            browser.execute(installCode()+"("+js+")");
+            browser.execute(installCode()+";("+js+")");
             return null;
         } else {
-            return browser.executeAndReturnString(installCode()+"("+js+")");
+            return browser.executeAndReturnString(installCode()+";("+js+")");
         }
     }