diff --git a/res/res_stasis_websocket.c b/res/res_stasis_websocket.c
index 3ef0085f3d..5b21ebbd47 100644
--- a/res/res_stasis_websocket.c
+++ b/res/res_stasis_websocket.c
@@ -114,7 +114,9 @@ struct stasis_ws_session_info {
 
 static void session_dtor(void *obj)
 {
+#ifdef AST_DEVMODE /* Avoid unused variable warning */
 	struct stasis_ws_session_info *session = obj;
+#endif
 
 	/* session_shutdown should have been called before */
 	ast_assert(session->ws_session == NULL);