diff --git a/interface/interface.dm b/interface/interface.dm
index ffaeadc5776..a24e86cd3aa 100644
--- a/interface/interface.dm
+++ b/interface/interface.dm
@@ -171,4 +171,11 @@ Any-Mode: (hotkey doesn't need to be on)
 </font>"}
 
 	src << hotkey_mode
-	src << other
\ No newline at end of file
+	src << other
+
+// Needed to circumvent a bug where .winset does not work when used on the window.on-size event in skins.
+// Used by /datum/html_interface/nanotrasen (code/modules/html_interface/nanotrasen/nanotrasen.dm)
+/client/verb/_swinset(var/x as text)
+	set name = ".swinset"
+	set hidden = 1
+	winset(src, null, x)