diff --git a/cmd/clef/main.go b/cmd/clef/main.go
index 1266289d8c..2adc7d83b3 100644
--- a/cmd/clef/main.go
+++ b/cmd/clef/main.go
@@ -923,7 +923,7 @@ func testExternalUI(api *core.SignerAPI) {
 		}
 	}
 	expectApprove := func(testcase string, err error) {
-		if errors.Is(err, accounts.ErrUnknownAccount) {
+		if err == nil || errors.Is(err, accounts.ErrUnknownAccount) {
 			return
 		}
 		addErr(fmt.Sprintf("%v: expected no error, got %v", testcase, err.Error()))