1 files changed, 2 insertions, 2 deletions
diff --git a/src/BtBitfieldMessageValidator.h b/src/BtBitfieldMessageValidator.h
index 15eb5c18..cd8058e1 100644
--- a/src/BtBitfieldMessageValidator.h
+++ b/src/BtBitfieldMessageValidator.h
@@ -43,10 +43,10 @@ namespace aria2 {
 class BtBitfieldMessageValidator : public BtMessageValidator {
 private:
   const BtBitfieldMessage* message;
-  int32_t numPiece;
+  size_t numPiece;
 public:
   BtBitfieldMessageValidator(const BtBitfieldMessage* message,
-			     int32_t numPiece):
+			     size_t numPiece):
     message(message),
     numPiece(numPiece) {}