diff --git a/mingw-glib2.spec b/mingw-glib2.spec
index bc29781..3599799 100644
--- a/mingw-glib2.spec
+++ b/mingw-glib2.spec
@@ -55,6 +55,7 @@ Patch2:         glib-build-dbus-proxy-testcase-only-on-unix.patch
 # https://bugzilla.gnome.org/show_bug.cgi?id=692085
 Patch3:         glib-send-log-messages-to-correct-stdout-and-stderr.patch
 
+# https://bugzilla.gnome.org/show_bug.cgi?id=694506
 Patch4:         glib-formatstring.patch
 
 %description