diff --git a/integration-cli/docker_cli_diff_test.go b/integration-cli/docker_cli_diff_test.go
index 726f23491c..c6bf2bbd18 100644
--- a/integration-cli/docker_cli_diff_test.go
+++ b/integration-cli/docker_cli_diff_test.go
@@ -85,7 +85,7 @@ func TestDiffEnsureOnlyKmsgAndPtmx(t *testing.T) {
 
 	for _, line := range strings.Split(out, "\n") {
 		if line != "" && !expected[line] {
-			t.Errorf("'%s' is shown in the diff but shouldn't", line)
+			t.Errorf("%q is shown in the diff but shouldn't", line)
 		}
 	}