diff --git a/src/chainparams.cpp b/src/chainparams.cpp
index b2b4e4732..c9dee25c5 100644
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -12,8 +12,6 @@
 
 #include <boost/assign/list_of.hpp>
 
-using namespace std;
-
 #include "chainparamsseeds.h"
 
 static CBlock CreateGenesisBlock(const char* pszTimestamp, CScript genesisOutputScript, uint32_t nTime=1231006505, uint32_t nNonce=2083236893, uint32_t nBits=0x1d00ffff, int32_t nVersion=1, const CAmount& genesisReward=50 * COIN)
@@ -22,7 +20,7 @@ static CBlock CreateGenesisBlock(const char* pszTimestamp, CScript genesisOutput
     txNew.nVersion = 1;
     txNew.vin.resize(1);
     txNew.vout.resize(1);
-    txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
+    txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << std::vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
     txNew.vout[0].nValue = genesisReward;
     txNew.vout[0].scriptPubKey = genesisOutputScript;