1 files changed, 1 insertions, 1 deletions
diff --git a/packages/taler-wallet-webextension/src/mui/handlers.ts b/packages/taler-wallet-webextension/src/mui/handlers.ts
index 60cfee421..646bdcf17 100644
--- a/packages/taler-wallet-webextension/src/mui/handlers.ts
+++ b/packages/taler-wallet-webextension/src/mui/handlers.ts
@@ -17,7 +17,7 @@ export interface ToggleHandler {
 }
 
 export interface SelectFieldHandler {
-  onChange: (value: string) => Promise<void>;
+  onChange?: (value: string) => Promise<void>;
   error?: string;
   value: string;
   isDirty?: boolean;