diff --git a/code/_onclick/drag_drop.dm b/code/_onclick/drag_drop.dm
index ac401489f40a..632bc77ec958 100644
--- a/code/_onclick/drag_drop.dm
+++ b/code/_onclick/drag_drop.dm
@@ -15,12 +15,12 @@
 	if(!Adjacent(usr) || !over.Adjacent(usr))
 		return // should stop you from dragging through windows
 
-	over.MouseDrop_T(src,usr)
+	over.MouseDrop_T(src,usr,params)
 	return
 
 // receive a mousedrop
-/atom/proc/MouseDrop_T(atom/dropping, mob/user)
-	SEND_SIGNAL(src, COMSIG_MOUSEDROPPED_ONTO, dropping, user)
+/atom/proc/MouseDrop_T(atom/dropping, mob/user, params)
+	SEND_SIGNAL(src, COMSIG_MOUSEDROPPED_ONTO, dropping, user, params)
 	return