diff --git a/libraries/libldap_r/thr_debug.c b/libraries/libldap_r/thr_debug.c
index 6d6b780643..3b99e838fc 100644
--- a/libraries/libldap_r/thr_debug.c
+++ b/libraries/libldap_r/thr_debug.c
@@ -710,7 +710,7 @@ ldap_pvt_thread_sleep( unsigned int interval )
 	return 0;
 }
 
-void
+static void
 thread_exiting( const char *how, const char *msg )
 {
 	ldap_pvt_thread_t thread;