diff --git a/mods/apis/ctf_gui/init.lua b/mods/apis/ctf_gui/init.lua
index 9ca06e89d7..d2b88231e9 100644
--- a/mods/apis/ctf_gui/init.lua
+++ b/mods/apis/ctf_gui/init.lua
@@ -144,6 +144,7 @@ do
 			end
 		end
 
+		minetest.log("action", "[ctf_gui] unpacking: "..dump(l))
 		return format(base, unpck(l))
 	end