diff --git a/engine/client/identification.c b/engine/client/identification.c
index 3b8cc517..e5a212c7 100644
--- a/engine/client/identification.c
+++ b/engine/client/identification.c
@@ -13,6 +13,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 */
 
+#include "build.h"
 #include <inttypes.h>
 #include <fcntl.h>
 #if !XASH_WIN32