diff --git a/packages/backend/src/graphql/mutations/update-step.ts b/packages/backend/src/graphql/mutations/update-step.ts
index 3a393fd9..d65ffecc 100644
--- a/packages/backend/src/graphql/mutations/update-step.ts
+++ b/packages/backend/src/graphql/mutations/update-step.ts
@@ -1,4 +1,5 @@
 import { IJSONObject } from '@automatisch/types';
+import App from '../../models/app';
 import Step from '../../models/step';
 import Context from '../../types/express/context';
 
@@ -42,6 +43,10 @@ const updateStep = async (
     }
   }
 
+  if (step.isAction) {
+    await App.checkAppAndAction(input.appKey, input.key);
+  }
+
   step = await Step.query()
     .patchAndFetchById(input.id, {
       key: input.key,
diff --git a/packages/backend/src/models/app.ts b/packages/backend/src/models/app.ts
index 998566a1..f5cb4b36 100644
--- a/packages/backend/src/models/app.ts
+++ b/packages/backend/src/models/app.ts
@@ -36,6 +36,16 @@ class App {
 
     return appInfoConverter(rawAppData);
   }
+
+  static async checkAppAndAction(appKey: string, actionKey: string): Promise<void> {
+    const app = await this.findOneByKey(appKey);
+
+    const hasAction = app.actions?.find(action => action.key === actionKey);
+
+    if (!hasAction) {
+      throw new Error(`${app.name} does not have an action with the "${actionKey}" key!`);
+    }
+  }
 }
 
 export default App;