diff --git a/code/game/bg_lib.h b/code/game/bg_lib.h
index aee0248d..cd9826e7 100644
--- a/code/game/bg_lib.h
+++ b/code/game/bg_lib.h
@@ -37,7 +37,7 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 #define NULL ((void *)0)
 #endif
 
-typedef int size_t;
+typedef unsigned int size_t;
 
 typedef char *  va_list;
 #define _INTSIZEOF(n)   ( (sizeof(n) + sizeof(int) - 1) & ~(sizeof(int) - 1) )