1 files changed, 1 insertions, 1 deletions
diff --git a/src/hash.h b/src/hash.h
index deaceab6..56f9a90b 100644
--- a/src/hash.h
+++ b/src/hash.h
@@ -20,7 +20,7 @@ this program.  If not, see <https://www.gnu.org/licenses/>.  */
 #include <stdio.h>
 #include <ctype.h>
 
-#if defined __cplusplus || (defined __STDC__ && __STDC__) || defined WINDOWS32
+#if defined __cplusplus || (defined __STDC__ && __STDC__) || MK_OS_W32
 # if !defined __GLIBC__ || !defined __P
 #  undef	__P
 #  define __P(protos)	protos