diff --git a/rc/signals.lua b/rc/signals.lua
index 8f951f1..b7dae51 100644
--- a/rc/signals.lua
+++ b/rc/signals.lua
@@ -76,5 +76,7 @@ client.add_signal("focus", function(c)
 			   end)
 client.add_signal("unfocus", function(c)
 		     c.border_color = beautiful.border_normal
-		     c.opacity = 0.85
+                     if not awful.rules.match_any(c, { instance = { "plugin-container" } }) then
+                        c.opacity = 0.85
+                     end
 			     end)