1 files changed, 1 insertions, 1 deletions
diff --git a/cbcmac.cpp b/cbcmac.cpp
index e262535d..dfac071b 100644
--- a/cbcmac.cpp
+++ b/cbcmac.cpp
@@ -6,7 +6,7 @@
 
 NAMESPACE_BEGIN(CryptoPP)
 
-void CBC_MAC_Base::UncheckedSetKey(const byte *key, size_t length, const NameValuePairs &params)
+void CBC_MAC_Base::UncheckedSetKey(const byte *key, unsigned int length, const NameValuePairs &params)
 {
 	AccessCipher().SetKey(key, length, params);
 	m_reg.CleanNew(AccessCipher().BlockSize());