diff --git a/tests/examples/text/gears/object/signal.lua b/tests/examples/text/gears/object/signal.lua
index e21bdb31..109d35fd 100644
--- a/tests/examples/text/gears/object/signal.lua
+++ b/tests/examples/text/gears/object/signal.lua
@@ -2,6 +2,11 @@ local gears = require("gears") --DOC_HIDE
 
 local o = gears.object{}
 
+-- Add a __tostring metamethod for prettier output --DOC_HIDE
+getmetatable(o).__tostring = function() --DOC_HIDE
+    return "[obj]" --DOC_HIDE
+end --DOC_HIDE
+
 -- Function can be attached to signals
 local function slot(obj, a, b, c)
     print("In slot", obj, a, b, c)