diff --git a/common/flatpak-bwrap.c b/common/flatpak-bwrap.c
index 826fd621..f419d23f 100644
--- a/common/flatpak-bwrap.c
+++ b/common/flatpak-bwrap.c
@@ -280,7 +280,7 @@ flatpak_bwrap_bundle_args (FlatpakBwrap *bwrap,
                            gboolean      one_arg,
                            GError      **error)
 {
-  gchar *data;
+  g_autofree gchar *data = NULL;
   gchar *ptr;
   gint i;
   gsize data_len = 0;