diff --git a/src/plugins/trigger/trigger-callback.c b/src/plugins/trigger/trigger-callback.c
index 0ef7cc279..b7fc81ad6 100644
--- a/src/plugins/trigger/trigger-callback.c
+++ b/src/plugins/trigger/trigger-callback.c
@@ -892,6 +892,9 @@ trigger_callback_line_cb (const void *pointer, void *data,
     }
 
 end:
+    if (tags)
+        weechat_string_free_split (tags);
+
     TRIGGER_CALLBACK_CB_END(hashtable);
 }