"uint" is not a type

diff --git a/zrtp/ZRtp.cpp b/zrtp/ZRtp.cpp
index 8799f4c..74e2485 100755
--- a/zrtp/ZRtp.cpp
+++ b/zrtp/ZRtp.cpp
@@ -947,7 +947,7 @@ ZrtpPacketConfirm* ZRtp::prepareConfirm2(ZrtpPacketConfirm* confirm1, uint32_t*
 
     // Use the Responder's keys here because we are Initiator here and
     // receive packets from Responder
-    uint32_t hmlen = (confirm1->getLength() - (uint)9) * ZRTP_WORD_SIZE;
+    uint32_t hmlen = (confirm1->getLength() - 9U) * ZRTP_WORD_SIZE;
 
     // Use negotiated HMAC (hash)
     hmacFunction(hmacKeyR, hashLength, confirm1->getHashH0(), hmlen, confMac, &macLen);
@@ -1033,7 +1033,7 @@ ZrtpPacketConfirm* ZRtp::prepareConfirm2(ZrtpPacketConfirm* confirm1, uint32_t*
         getZidCacheInstance()->saveRecord(zidRec);
 
     // Encrypt and HMAC with Initiator's key - we are Initiator here
-    hmlen = (zrtpConfirm2.getLength() - (uint)9) * ZRTP_WORD_SIZE;
+    hmlen = (zrtpConfirm2.getLength() - 9U) * ZRTP_WORD_SIZE;
     cipher->getEncrypt()(zrtpKeyI, cipher->getKeylen(), randomIV, zrtpConfirm2.getHashH0(), hmlen);
 
     // Use negotiated HMAC (hash)
@@ -1154,7 +1154,7 @@ ZrtpPacketConf2Ack* ZRtp::prepareConf2Ack(ZrtpPacketConfirm *confirm2, uint32_t*
 
     // Use the Initiator's keys here because we are Responder here and
     // reveice packets from Initiator
-    uint32_t hmlen = (confirm2->getLength() - (uint)9) * ZRTP_WORD_SIZE;
+    uint32_t hmlen = (confirm2->getLength() - 9U) * ZRTP_WORD_SIZE;
 
     // Use negotiated HMAC (hash)
     hmacFunction(hmacKeyI, hashLength, confirm2->getHashH0(), hmlen, confMac, &macLen);
@@ -2844,7 +2844,7 @@ bool ZRtp::sendSASRelayPacket(uint8_t* sh, std::string render) {
     zrtpSasRelay.setTrustedSas(sh);
     zrtpSasRelay.setSasAlgo((uint8_t*)render.c_str());
 
-    uint32_t hmlen = (zrtpSasRelay.getLength() - (uint)9) * ZRTP_WORD_SIZE;
+    uint32_t hmlen = (zrtpSasRelay.getLength() - 9U) * ZRTP_WORD_SIZE;
     cipher->getEncrypt()(ekey, cipher->getKeylen(), randomIV, (uint8_t*)zrtpSasRelay.getFiller(), hmlen);
 
     // Use negotiated HMAC (hash)