diff --git a/packages/uhk-common/src/config-serializer/config-items/module.ts b/packages/uhk-common/src/config-serializer/config-items/module.ts
index 45a350be..7681e5de 100644
--- a/packages/uhk-common/src/config-serializer/config-items/module.ts
+++ b/packages/uhk-common/src/config-serializer/config-items/module.ts
@@ -54,15 +54,12 @@ export class Module {
 
         const noneAction = new NoneAction();
 
-        const keyActions: KeyAction[] = this.keyActions.map(keyAction => {
+        buffer.writeArray(this.keyActions, (uhkBuffer: UhkBuffer, keyAction: KeyAction) => {
             if (keyAction) {
-                return keyAction;
+                keyAction.toBinary(uhkBuffer, userConfiguration);
+            } else {
+                noneAction.toBinary(uhkBuffer);
             }
-            return noneAction;
-        });
-
-        buffer.writeArray(keyActions, (uhkBuffer: UhkBuffer, keyAction: KeyAction) => {
-            keyAction.toBinary(uhkBuffer, userConfiguration);
         });
     }