diff --git a/src/test/util/transaction_utils.cpp b/src/test/util/transaction_utils.cpp
index b65a9568c65..cf4ed934669 100644
--- a/src/test/util/transaction_utils.cpp
+++ b/src/test/util/transaction_utils.cpp
@@ -7,7 +7,7 @@
 #include <script/signingprovider.h>
 #include <test/util/transaction_utils.h>
 
-CMutableTransaction BuildCreditingTransaction(const CScript& scriptPubKey, int nValue)
+CMutableTransaction BuildCreditingTransaction(const CScript& scriptPubKey, CAmount nValue)
 {
     CMutableTransaction txCredit;
     txCredit.version = 1;
diff --git a/src/test/util/transaction_utils.h b/src/test/util/transaction_utils.h
index 867554f8057..ca643f0be52 100644
--- a/src/test/util/transaction_utils.h
+++ b/src/test/util/transaction_utils.h
@@ -15,7 +15,7 @@ class CCoinsViewCache;
 
 // create crediting transaction
 // [1 coinbase input => 1 output with given scriptPubkey and value]
-CMutableTransaction BuildCreditingTransaction(const CScript& scriptPubKey, int nValue = 0);
+CMutableTransaction BuildCreditingTransaction(const CScript& scriptPubKey, CAmount nValue = 0);
 
 // create spending transaction
 // [1 input with referenced transaction outpoint, scriptSig, scriptWitness =>