diff --git a/Mac/Include/config.h b/Mac/Include/config.h
index ad512acf009..fc6f42741ce 100644
--- a/Mac/Include/config.h
+++ b/Mac/Include/config.h
@@ -44,6 +44,8 @@ OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 #define SIZEOF_INT 4
 #define SIZEOF_LONG 4
+#define SIZEOF_VOID_P 4
+#define HAVE_LONG_LONG 1
 
 #ifdef THINK_C
 #define HAVE_FOPENRF