diff --git a/test/functional/mempool_packages.py b/test/functional/mempool_packages.py
index dc766d709d..308d75fcc9 100755
--- a/test/functional/mempool_packages.py
+++ b/test/functional/mempool_packages.py
@@ -30,7 +30,7 @@ def chain_transaction(self, node, parent_txid, vout, value, fee, num_outputs):
         outputs = {}
         for i in range(num_outputs):
             outputs[node.getnewaddress()] = send_value
-        outputs["fee"] = fee
+        outputs["fee"] = value - (num_outputs * send_value)
         rawtx = node.createrawtransaction(inputs, outputs)
         signedtx = node.signrawtransactionwithwallet(rawtx)
         txid = node.sendrawtransaction(signedtx['hex'])