diff --git a/kdc/kdc.c b/kdc/kdc.c
index f5062d4eb..ac36604d7 100644
--- a/kdc/kdc.c
+++ b/kdc/kdc.c
@@ -1,5 +1,6 @@
 #include "kdc_locl.h"
 
+#define MIN(x,y) (((x)<(y))?(x):(y))
 RCSID("$Id$");
 
 struct timeval now;
diff --git a/kdc/kerberos5.c b/kdc/kerberos5.c
index f5062d4eb..ac36604d7 100644
--- a/kdc/kerberos5.c
+++ b/kdc/kerberos5.c
@@ -1,5 +1,6 @@
 #include "kdc_locl.h"
 
+#define MIN(x,y) (((x)<(y))?(x):(y))
 RCSID("$Id$");
 
 struct timeval now;