diff --git a/libs/turtle-utils.lua b/libs/turtle-utils.lua
index e1e4e42..8a84aeb 100644
--- a/libs/turtle-utils.lua
+++ b/libs/turtle-utils.lua
@@ -320,7 +320,11 @@ turtleUtils.refuelWithBuffer = function(sideFuel, sideBuffer, minFuelNeeded, sle
 
   local ok, errMessage = turtleUtils.refuel(minFuelNeeded, function()
     local fuelSlot = findFuelSlot(fuelInventory)
-    fuelInventory.pushItems(peripheral.getName(bufferInventory), fuelSlot)
+
+    if fuelSlot ~= nil then
+      fuelInventory.pushItems(peripheral.getName(bufferInventory), fuelSlot)
+    end
+
     return suckFn()
   end, sleepTime)