diff --git a/src/mod/endpoints/mod_alsa/mod_alsa.c b/src/mod/endpoints/mod_alsa/mod_alsa.c
index 494a5bed31..cadd560de4 100644
--- a/src/mod/endpoints/mod_alsa/mod_alsa.c
+++ b/src/mod/endpoints/mod_alsa/mod_alsa.c
@@ -948,6 +948,7 @@ SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_alsa_shutdown)
 	}
 	switch_core_hash_destroy(&globals.call_hash);
 
+	switch_event_free_subclass(MY_EVENT_RINGING);
 	switch_safe_free(globals.dialplan);
 	switch_safe_free(globals.cid_name);
 	switch_safe_free(globals.cid_num);