diff --git a/src/plusUtils.ts b/src/plusUtils.ts
index 98e2db77..ff33fe83 100644
--- a/src/plusUtils.ts
+++ b/src/plusUtils.ts
@@ -32,6 +32,10 @@ export function useIsPlusUser(): boolean | undefined {
 
 /** Check if the user is a Plus user. */
 export async function checkIsPlusUser(): Promise<boolean | undefined> {
+  if (!getSettings().plusLicenseKey) {
+    turnOffPlus();
+    return false;
+  }
   const brevilabsClient = BrevilabsClient.getInstance();
   const result = await brevilabsClient.validateLicenseKey();
   return result.isValid;