diff --git a/config-serializer/config-items/KeyAction.ts b/config-serializer/config-items/KeyAction.ts
index 1242c5cd..4f66255f 100644
--- a/config-serializer/config-items/KeyAction.ts
+++ b/config-serializer/config-items/KeyAction.ts
@@ -13,7 +13,7 @@ enum KeyActionId {
     PlayMacroAction              = 8
 }
 
-let KeyActionType = {
+let keyActionType = {
     NoneAction                   : 'none',
     KeystrokeAction              : 'keystroke',
     KeystrokeModifiersAction     : 'keystrokeModifiers',
diff --git a/config-serializer/config-items/NoneAction.ts b/config-serializer/config-items/NoneAction.ts
index 16312074..3c18699a 100644
--- a/config-serializer/config-items/NoneAction.ts
+++ b/config-serializer/config-items/NoneAction.ts
@@ -1,7 +1,7 @@
 class NoneAction extends KeyAction {
 
     _fromJsObject(jsObject: any): NoneAction {
-        this.assertKeyActionType(jsObject, KeyActionType.NoneAction, 'NoneAction');
+        this.assertKeyActionType(jsObject, keyActionType.NoneAction, 'NoneAction');
         return this;
     }
 
@@ -12,7 +12,7 @@ class NoneAction extends KeyAction {
 
     _toJsObject(): any {
         return {
-            keyActionType: KeyActionType.NoneAction
+            keyActionType: keyActionType.NoneAction
         };
     }
 
diff --git a/tslint.json b/tslint.json
index f6d5c24e..03a41466 100644
--- a/tslint.json
+++ b/tslint.json
@@ -21,7 +21,8 @@
         "no-unused-expression": true,
         "no-unused-variable": [
             true,
-            "check-parameters"
+            "check-parameters",
+            {"ignore-pattern": "assert.*|keyActionType"}
         ],
         "no-use-before-declare": true,
         "no-var-keyword": true,