diff --git a/lib/awful/widget/tasklist.lua.in b/lib/awful/widget/tasklist.lua.in
index 448a38d0f..d67de9870 100644
--- a/lib/awful/widget/tasklist.lua.in
+++ b/lib/awful/widget/tasklist.lua.in
@@ -67,6 +67,7 @@ function new(label, buttons)
         c:add_signal("property::maximized_vertical", u)
         c:add_signal("property::name", u)
         c:add_signal("property::icon_name", u)
+        c:add_signal("property::icon", u)
         c:add_signal("property::skip_taskbar", u)
         c:add_signal("property::hidden", u)
         c:add_signal("tagged", u)