diff --git a/lib/awful/widget/tasklist.lua.in b/lib/awful/widget/tasklist.lua.in
index b86f7544..e41c405c 100644
--- a/lib/awful/widget/tasklist.lua.in
+++ b/lib/awful/widget/tasklist.lua.in
@@ -148,6 +148,7 @@ function new(screen, filter, buttons, style, template)
         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)