diff --git a/src/main/java/io/github/thebusybiscuit/slimefun4/implementation/items/electric/machines/ChargingBench.java b/src/main/java/io/github/thebusybiscuit/slimefun4/implementation/items/electric/machines/ChargingBench.java
index e3395e9f64..b535e44b40 100644
--- a/src/main/java/io/github/thebusybiscuit/slimefun4/implementation/items/electric/machines/ChargingBench.java
+++ b/src/main/java/io/github/thebusybiscuit/slimefun4/implementation/items/electric/machines/ChargingBench.java
@@ -44,6 +44,10 @@ protected void tick(Block b) {
         for (int slot : getInputSlots()) {
             ItemStack item = inv.getItemInSlot(slot);
 
+            if (item == null || item.getAmount() != 1) {
+                continue;
+            }
+
             if (charge(b, inv, slot, item)) {
                 return;
             }