diff --git a/tsconfig.json b/tsconfig.json
index 9ae0c3c3..4bfeef7d 100755
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -2,7 +2,7 @@
   "compilerOptions": {
     "incremental": true,
     "noEmit": true,
-    "target": "es6",
+    "target": "es5",
     "module": "esnext", //commonjs destroys 'dynamic imports' which is used for code splitting
     "noImplicitAny": false,
     "preserveConstEnums": true,