diff --git a/src/main/java/techreborn/tiles/TileMatterFabricator.java b/src/main/java/techreborn/tiles/TileMatterFabricator.java
index e69006361..724642d11 100644
--- a/src/main/java/techreborn/tiles/TileMatterFabricator.java
+++ b/src/main/java/techreborn/tiles/TileMatterFabricator.java
@@ -114,7 +114,7 @@ public class TileMatterFabricator extends TilePowerAcceptor
 		if (!super.world.isRemote) {
 			for (int i = 0; i < 6; i++) {
 				final ItemStack stack = this.inventory.getStackInSlot(i);
-				if (stack != null) {
+				if (!stack.isEmpty()) {
 					final int amp = this.getValue(stack);
 					if(amp != 0 && this.canUseEnergy(85)){
 						this.useEnergy(85);