diff --git a/lib/awful/titlebar.lua.in b/lib/awful/titlebar.lua.in
index 2220ef5f..6abfc0d5 100644
--- a/lib/awful/titlebar.lua.in
+++ b/lib/awful/titlebar.lua.in
@@ -37,7 +37,7 @@ local data = otable()
 -- fg_focus: the background color for focused window.
 -- width: the titlebar width
 function add(c, args)
-    if not c or c.type ~= "normal" then return end
+    if not c or (c.type ~= "normal" and c.type ~= "dialog") then return end
     if not args then args = {} end
     local theme = beautiful.get()
     -- Store colors