1 files changed, 4 insertions, 0 deletions
diff --git a/util.h b/util.h
index f633b51..531ab25 100644
--- a/util.h
+++ b/util.h
@@ -1,7 +1,11 @@
 /* See LICENSE file for copyright and license details. */
 
+#ifndef MAX
 #define MAX(A, B)               ((A) > (B) ? (A) : (B))
+#endif
+#ifndef MIN
 #define MIN(A, B)               ((A) < (B) ? (A) : (B))
+#endif
 #define BETWEEN(X, A, B)        ((A) <= (X) && (X) <= (B))
 
 void die(const char *fmt, ...);