diff --git a/src/validation.h b/src/validation.h
--- a/src/validation.h
+++ b/src/validation.h
@@ -435,7 +435,7 @@
  */
 bool CheckInputs(const CTransaction &tx, CValidationState &state,
                  const CCoinsViewCache &view, bool fScriptChecks,
-                 unsigned int flags, bool cacheStore,
+                 uint32_t flags, bool cacheStore,
                  const PrecomputedTransactionData &txdata,
                  std::vector<CScriptCheck> *pvChecks = nullptr);
 
diff --git a/src/validation.cpp b/src/validation.cpp
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -1338,7 +1338,7 @@
 
 bool CheckInputs(const CTransaction &tx, CValidationState &state,
                  const CCoinsViewCache &inputs, bool fScriptChecks,
-                 unsigned int flags, bool cacheStore,
+                 uint32_t flags, bool cacheStore,
                  const PrecomputedTransactionData &txdata,
                  std::vector<CScriptCheck> *pvChecks) {
     assert(!tx.IsCoinBase());