diff --git a/tests/test-utils.h b/tests/test-utils.h
index 7419a4c7..8dc624bc 100644
--- a/tests/test-utils.h
+++ b/tests/test-utils.h
@@ -17,6 +17,8 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#pragma once
+
 #include <glib.h>
 
 typedef enum {