diff --git a/backend-chests.lua b/backend-chests.lua
index e77bfd1..fc28679 100644
--- a/backend-chests.lua
+++ b/backend-chests.lua
@@ -137,7 +137,7 @@ end
 local function update_slot(inv, slot, by)
     index[inv][slot].count = index[inv][slot].count - by
     if index[inv][slot].count == 0 then index[inv][slot] = nil
-    elseif index[inv][lot].count < 0 then os.queueEvent "reindex" error "Index inconsistency error." end
+    elseif index[inv][slot].count < 0 then os.queueEvent "reindex" error "Index inconsistency error." end
 end
 
 local function server(command)
@@ -193,7 +193,9 @@ local function server(command)
         local moved = 0
 
         for _, loc in pairs(space_locations) do
-            moved = moved + peripheral.call(conf.buffer_internal, "pushItems", loc.inventory, BUFFER_IN_SLOT, 64, loc.slot) -- push from buffer to free space
+            local moved_now = peripheral.call(conf.buffer_internal, "pushItems", loc.inventory, BUFFER_IN_SLOT, 64, loc.slot) -- push from buffer to free space
+            update_slot(loc.inventory, loc.slot, -moved_now)
+            moved = moved + moved_now
         end
         
         return { moved = moved }