diff --git a/plugins/modem-manager/fu-mm-utils.c b/plugins/modem-manager/fu-mm-utils.c
index 8cb2c733c..e543d03d5 100644
--- a/plugins/modem-manager/fu-mm-utils.c
+++ b/plugins/modem-manager/fu-mm-utils.c
@@ -4,6 +4,8 @@
  * SPDX-License-Identifier: LGPL-2.1+
  */
 
+#include "config.h"
+
 #include <gio/gio.h>
 #include "fu-mm-utils.h"