diff --git a/tools/bsp2img/bsp2img.c b/tools/bsp2img/bsp2img.c
index 2ac627792..b0e157f57 100644
--- a/tools/bsp2img/bsp2img.c
+++ b/tools/bsp2img/bsp2img.c
@@ -28,6 +28,7 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 #include <math.h>
 #include <values.h>
 #include <stdint.h>
+#include <limits.h>
 
 #include "QF/bspfile.h"
 #include "QF/cmd.h"