diff --git a/src/main.cpp b/src/main.cpp
index 84edf5bb9..81fe1acd4 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1033,9 +1033,9 @@ unsigned int GetP2SHSigOpCount(const CTransaction& tx, const CCoinsViewCache& in
     return nSigOps;
 }
 
-uint64_t GetTransactionSigOpCount(const CTransaction &tx, const CCoinsViewCache &inputs, int flags)
+int64_t GetTransactionSigOpCount(const CTransaction& tx, const CCoinsViewCache& inputs, int flags)
 {
-    uint64_t nSigOps = GetSigOpCountWithoutP2SH(tx);
+    int64_t nSigOps = GetSigOpCountWithoutP2SH(tx);
     if (tx.IsCoinBase()) {
         return nSigOps;
     }