diff --git a/glib_utils.cc b/glib_utils.cc
index 523a16f..3371da4 100644
--- a/glib_utils.cc
+++ b/glib_utils.cc
@@ -20,7 +20,7 @@
                          (*error)->code,
                          (*error)->message ? (*error)->message : "(unknown)");
   g_error_free(*error);
-  *error = NULL;
+  *error = nullptr;
   return message;
 }