diff --git a/internal/internal_worker.go b/internal/internal_worker.go
index c6fa4080f..607e49dfe 100644
--- a/internal/internal_worker.go
+++ b/internal/internal_worker.go
@@ -1418,7 +1418,7 @@ func (aw *WorkflowReplayer) replayWorkflowHistory(logger log.Logger, service wor
 			}
 		}
 	}
-	return fmt.Errorf("replay workflow doesn't return the same result as the last event, resp: (%T) %v, last: %v", resp, resp, last)
+	return fmt.Errorf("replay workflow doesn't return the same result as the last event, resp: %s, last: %s", resp, resp, last)
 }
 
 func extractHistoryFromFile(jsonfileName string, lastEventID int64) (*historypb.History, error) {