diff --git a/src/base58.cpp b/src/base58.cpp
index 33a6f4709..f59eb6ba2 100644
--- a/src/base58.cpp
+++ b/src/base58.cpp
@@ -104,7 +104,7 @@ std::string EncodeBase58(const unsigned char* pbegin, const unsigned char* pend)
 
 std::string EncodeBase58(const std::vector<unsigned char>& vch)
 {
-    return EncodeBase58(&vch[0], &vch[0] + vch.size());
+    return EncodeBase58(vch.data(), vch.data() + vch.size());
 }
 
 bool DecodeBase58(const std::string& str, std::vector<unsigned char>& vchRet)
@@ -154,7 +154,7 @@ void CBase58Data::SetData(const std::vector<unsigned char>& vchVersionIn, const
     vchVersion = vchVersionIn;
     vchData.resize(nSize);
     if (!vchData.empty())
-        memcpy(&vchData[0], pdata, nSize);
+        memcpy(vchData.data(), pdata, nSize);
 }
 
 void CBase58Data::SetData(const std::vector<unsigned char>& vchVersionIn, const unsigned char* pbegin, const unsigned char* pend)
@@ -174,8 +174,8 @@ bool CBase58Data::SetString(const char* psz, unsigned int nVersionBytes)
     vchVersion.assign(vchTemp.begin(), vchTemp.begin() + nVersionBytes);
     vchData.resize(vchTemp.size() - nVersionBytes);
     if (!vchData.empty())
-        memcpy(&vchData[0], &vchTemp[nVersionBytes], vchData.size());
-    memory_cleanse(&vchTemp[0], vchTemp.size());
+        memcpy(vchData.data(), vchTemp.data() + nVersionBytes, vchData.size());
+    memory_cleanse(vchTemp.data(), vchTemp.size());
     return true;
 }
 
@@ -266,7 +266,7 @@ CTxDestination CBitcoinAddress::Get() const
     if (!IsValid())
         return CNoDestination();
     uint160 id;
-    memcpy(&id, &vchData[0], 20);
+    memcpy(&id, vchData.data(), 20);
     if (vchVersion == Params().Base58Prefix(CChainParams::PUBKEY_ADDRESS))
         return CKeyID(id);
     else if (vchVersion == Params().Base58Prefix(CChainParams::SCRIPT_ADDRESS))
@@ -280,7 +280,7 @@ bool CBitcoinAddress::GetKeyID(CKeyID& keyID) const
     if (!IsValid() || vchVersion != Params().Base58Prefix(CChainParams::PUBKEY_ADDRESS))
         return false;
     uint160 id;
-    memcpy(&id, &vchData[0], 20);
+    memcpy(&id, vchData.data(), 20);
     keyID = CKeyID(id);
     return true;
 }
diff --git a/src/base58.h b/src/base58.h
index 8b82c6393..38262fb95 100644
--- a/src/base58.h
+++ b/src/base58.h
@@ -194,8 +194,8 @@ public:
     K GetKey() {
         K ret;
         if (vchData.size() == Size) {
-            //if base58 encoded data not holds a ext key, return a !IsValid() key
-            ret.Decode(&vchData[0]);
+            // If base58 encoded data does not hold an ext key, return a !IsValid() key
+            ret.Decode(vchData.data());
         }
         return ret;
     }