diff --git a/metropolis/test/e2e/suites/kubernetes/run_test.go b/metropolis/test/e2e/suites/kubernetes/run_test.go
index ed08203..9056ec4 100644
--- a/metropolis/test/e2e/suites/kubernetes/run_test.go
+++ b/metropolis/test/e2e/suites/kubernetes/run_test.go
@@ -182,7 +182,7 @@
 				errorMsg.WriteString(" | ")
 				errorMsg.WriteString(msg.Message)
 			}
-			return fmt.Errorf("pod is not ready: %v", errorMsg.String())
+			return fmt.Errorf("pod is not ready: %s", errorMsg.String())
 		}
 	})
 	util.TestEventual(t, "Simple StatefulSet with PVC", ctx, largeTestTimeout, func(ctx context.Context) error {