diff --git a/packages/taler-wallet-cli/src/bench1.ts b/packages/taler-wallet-cli/src/bench1.ts
index 9c3f013b7..955d5b922 100644
--- a/packages/taler-wallet-cli/src/bench1.ts
+++ b/packages/taler-wallet-cli/src/bench1.ts
@@ -184,5 +184,5 @@ const codecForBench1Config = () =>
     .property("deposits", codecOptional(codecForNumber()))
     .property("currency", codecForString())
     .property("restartAfter", codecOptional(codecForNumber()))
-    .property("withdrawOnly", codecOptional(codecForBoolean())
+    .property("withdrawOnly", codecOptional(codecForBoolean()))
     .build("Bench1Config");