diff --git a/src/main/java/appeng/fluids/util/AEFluidInventory.java b/src/main/java/appeng/fluids/util/AEFluidInventory.java
index 64650e92d..21e7c498a 100644
--- a/src/main/java/appeng/fluids/util/AEFluidInventory.java
+++ b/src/main/java/appeng/fluids/util/AEFluidInventory.java
@@ -104,7 +104,7 @@ public class AEFluidInventory implements IAEFluidTank {
 
         if (doFill) {
             if (fluid == null) {
-                this.setFluidInSlot(slot, AEFluidStack.fromFluidStack(resource));
+                this.setFluidInSlot(slot, AEFluidStack.fromFluidStack(resource).setStackSize(amountToStore));
             } else {
                 fluid.setStackSize(fluid.getStackSize() + amountToStore);
                 this.onContentChanged(slot);