diff --git a/client/client_test.go b/client/client_test.go
index 7cb1184bb6b98bd1fb50e94a2821b21f684d5590..492f4fc7166c478aad359436de13baf6386b10f4 100644
--- a/client/client_test.go
+++ b/client/client_test.go
@@ -58,7 +58,7 @@ func TestSignGood(t *testing.T) {
 		fmt.Fprintln(w, string(j))
 	}))
 	defer ts.Close()
-	*url = ts.URL
+	*ca = ts.URL
 	_, err := send([]byte(`{}`), "token")
 	if err != nil {
 		t.Fatal(err)
@@ -83,7 +83,7 @@ func TestSignBad(t *testing.T) {
 		fmt.Fprintln(w, string(j))
 	}))
 	defer ts.Close()
-	*url = ts.URL
+	*ca = ts.URL
 	_, err := send([]byte(`{}`), "token")
 	if err != nil {
 		t.Fatal(err)