diff --git a/code/game/objects/items/weapons/storage/storage.dm b/code/game/objects/items/weapons/storage/storage.dm
index 60c5d9e587..08e947c45d 100644
--- a/code/game/objects/items/weapons/storage/storage.dm
+++ b/code/game/objects/items/weapons/storage/storage.dm
@@ -405,6 +405,9 @@
 	if(iscyborg(user))
 		return	//Robots can't interact with storage items.
 
+	if(contents.len >= storage_slots) //don't use items on the backpack if they don't fit
+		return 1
+
 	if(!can_be_inserted(W, 0 , user))
 		return 0