diff --git a/tools/mbspc/mbspc/l_poly.c b/tools/mbspc/mbspc/l_poly.c
index 7627d202..39e89186 100644
--- a/tools/mbspc/mbspc/l_poly.c
+++ b/tools/mbspc/mbspc/l_poly.c
@@ -20,7 +20,7 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 ===========================================================================
 */
 
-#include <malloc.h>
+#include <stdlib.h>
 #include "l_cmd.h"
 #include "l_math.h"
 #include "l_poly.h"
diff --git a/tools/mbspc/mbspc/qbsp.h b/tools/mbspc/mbspc/qbsp.h
index 909424b6..0310835d 100644
--- a/tools/mbspc/mbspc/qbsp.h
+++ b/tools/mbspc/mbspc/qbsp.h
@@ -28,7 +28,7 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 // _ML_ added end
 #include <io.h>
 #endif
-#include <malloc.h>
+#include <stdlib.h>
 #include "l_cmd.h"
 #include "l_math.h"
 #include "l_poly.h"