diff --git a/include/lutil_md5.h b/include/lutil_md5.h
index fb31443e9f..deabdb2acc 100644
--- a/include/lutil_md5.h
+++ b/include/lutil_md5.h
@@ -15,6 +15,7 @@ LDAP_BEGIN_DECL
    and always using it seems to have few disadvantages.  */
 
 #ifndef LDAP_UINT32
+#define LDAP_UINT32 1
 typedef LDAP_UINT4 uint32;
 #endif
 
diff --git a/include/lutil_sha1.h b/include/lutil_sha1.h
index 165c9ed11d..404c757fdd 100644
--- a/include/lutil_sha1.h
+++ b/include/lutil_sha1.h
@@ -16,6 +16,7 @@ LDAP_BEGIN_DECL
  */
 
 #ifndef LDAP_UINT32
+#define LDAP_UINT32 1
 typedef LDAP_UINT4 uint32;
 #endif