diff --git a/tests/src/main/java/net/neoforged/neoforge/debug/capabilities/VanillaHandlersTests.java b/tests/src/main/java/net/neoforged/neoforge/debug/capabilities/VanillaHandlersTests.java
index 9c09ae9bc1..9d3aeb124b 100644
--- a/tests/src/main/java/net/neoforged/neoforge/debug/capabilities/VanillaHandlersTests.java
+++ b/tests/src/main/java/net/neoforged/neoforge/debug/capabilities/VanillaHandlersTests.java
@@ -123,6 +123,7 @@ public static void testCauldronCapability(ExtendedGameTestHelper helper) {
         helper.assertTrue(wrapper.drain(new FluidStack(Fluids.WATER, 1000), EXECUTE).equals(new FluidStack(Fluids.WATER, 1000)), "Expected drain of 1000 water");
 
         helper.assertBlockPresent(Blocks.CAULDRON, cauldronPos);
+        helper.assertTrue(wrapper.getFluidInTank(0).isEmpty(), "Expected empty handler");
 
         // Try lava cauldron
         helper.setBlock(cauldronPos, Blocks.LAVA_CAULDRON);