diff --git a/quarry.lua b/quarry.lua
index 336a32f..360a25f 100644
--- a/quarry.lua
+++ b/quarry.lua
@@ -79,7 +79,7 @@ end
 local function handleFullInv(minEmpty)
   local didPlace = false
 
-  local result, drop, dig, onComplete
+  local result, drop, dig, onComplete = false, nil, nil, nil
   -- Empty inventory
   while isFull(minEmpty) do
     if not didPlace then
@@ -117,14 +117,16 @@ local function handleFullInv(minEmpty)
       ::continue::
   end
 
-  assert(dig ~= nil, "Placed chest, but dig operation is nil")
-  if didPlace and CHEST_PICKUP then
-    turtle.select(CHEST_SLOT)
-    dig()
+  if result then
+    assert(dig ~= nil, "Placed chest, but dig operation is nil")
+    if didPlace and CHEST_PICKUP then
+      turtle.select(CHEST_SLOT)
+      dig()
+    end
+  
+    assert(onComplete ~= nil, "Placed chest, but onComplete operation is nil")
+    onComplete()
   end
-
-  assert(onComplete ~= nil, "Placed chest, but onComplete operation is nil")
-  onComplete()
 end
 
 local function dig(checkRefuel)