diff --git a/src/chainparams.cpp b/src/chainparams.cpp
index 6b2223e6d..9afe46b87 100644
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -15,8 +15,6 @@
 
 #include "base58.h"
 
-using namespace std;
-
 #include "chainparamsseeds.h"
 
 static CBlock CreateGenesisBlock(const char* pszTimestamp, const CScript& genesisOutputScript, uint32_t nTime, const uint256& nNonce, const std::vector<unsigned char>& nSolution, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
@@ -25,7 +23,7 @@ static CBlock CreateGenesisBlock(const char* pszTimestamp, const CScript& genesi
     txNew.nVersion = 1;
     txNew.vin.resize(1);
     txNew.vout.resize(1);
-    txNew.vin[0].scriptSig = CScript() << 520617983 << CScriptNum(4) << vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
+    txNew.vin[0].scriptSig = CScript() << 520617983 << 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;