diff --git a/libraries/libldap/cyrus.c b/libraries/libldap/cyrus.c
index ef686fae64..15abb211fc 100644
--- a/libraries/libldap/cyrus.c
+++ b/libraries/libldap/cyrus.c
@@ -29,6 +29,14 @@
 
 #ifdef HAVE_CYRUS_SASL
 
+#ifdef HAVE_LIMITS_H
+#include <limits.h>
+#endif
+
+#ifndef INT_MAX
+#define	INT_MAX	2147483647	/* 32 bit signed max */
+#endif
+
 #ifdef LDAP_R_COMPILE
 ldap_pvt_thread_mutex_t ldap_int_sasl_mutex;
 #endif