diff --git a/libraries/libldap/unbind.c b/libraries/libldap/unbind.c
index 24cf90ad24..37616ed706 100644
--- a/libraries/libldap/unbind.c
+++ b/libraries/libldap/unbind.c
@@ -194,6 +194,7 @@ ldap_ld_free(
 #ifdef LDAP_R_COMPILE
 	ldap_pvt_thread_mutex_destroy( &ld->ld_req_mutex );
 	ldap_pvt_thread_mutex_destroy( &ld->ld_res_mutex );
+	ldap_pvt_thread_mutex_destroy( &ld->ld_conn_mutex );
 #endif
 #ifndef NDEBUG
 	LDAP_TRASH(ld);