diff --git a/FilterLists.sln.DotSettings b/FilterLists.sln.DotSettings
index 9e0dcb673..999bb0c35 100644
--- a/FilterLists.sln.DotSettings
+++ b/FilterLists.sln.DotSettings
@@ -5,6 +5,5 @@
 	<s:String x:Key="/Default/CodeInspection/GeneratedCode/GeneratedFileMasks/=_002A_002EDesigner_002Ecs/@EntryIndexedValue"></s:String>
 	<s:Boolean x:Key="/Default/CodeInspection/GeneratedCode/GeneratedFileMasks/=_002A_002EDesigner_002Ecs/@EntryIndexRemoved">True</s:Boolean>
   <s:String x:Key="/Default/CodeInspection/Highlighting/AnalysisEnabled/@EntryValue">SOLUTION</s:String>
-	<s:String x:Key="/Default/CodeInspection/JsInspections/LanguageLevel/@EntryValue">ECMAScript 2015</s:String>
 	<s:String x:Key="/Default/CodeStyle/CodeCleanup/SilentCleanupProfile/@EntryValue">Built-in: Full Cleanup</s:String>
 </wpf:ResourceDictionary>
\ No newline at end of file
diff --git a/src/FilterLists.Web/tsconfig.json b/src/FilterLists.Web/tsconfig.json
index 3e1191644..591702887 100644
--- a/src/FilterLists.Web/tsconfig.json
+++ b/src/FilterLists.Web/tsconfig.json
@@ -3,7 +3,7 @@
     "baseUrl": ".",
     "module": "es2015",
     "moduleResolution": "node",
-    "target": "es6",
+    "target": "es5",
     "jsx": "react",
     "sourceMap": true,
     "skipDefaultLibCheck": true,