diff --git a/include/ldap.h b/include/ldap.h
index 3e37e03397..73fdb1a9f2 100644
--- a/include/ldap.h
+++ b/include/ldap.h
@@ -2077,6 +2077,12 @@ LDAP_F( int )
 ldap_is_ldapi_url LDAP_P((
 	LDAP_CONST char *url ));
 
+#ifdef LDAP_CONNECTIONLESS
+LDAP_F( int )
+ldap_is_ldapc_url LDAP_P((
+	LDAP_CONST char *url ));
+#endif
+
 LDAP_F( int )
 ldap_url_parse LDAP_P((
 	LDAP_CONST char *url,
diff --git a/libraries/libldap/open.c b/libraries/libldap/open.c
index 5fe81a3350..7be650dd5c 100644
--- a/libraries/libldap/open.c
+++ b/libraries/libldap/open.c
@@ -33,6 +33,7 @@
 #include <ac/unistd.h>
 
 #include "ldap-int.h"
+#include "ldap.h"
 #include "ldap_log.h"
 
 /* Caller must hold the conn_mutex since simultaneous accesses are possible */