diff --git a/contracts/AddressRegistry.sol b/contracts/AddressRegistry.sol
new file mode 100644
index 0000000..e1bde9a
--- /dev/null
+++ b/contracts/AddressRegistry.sol
@@ -0,0 +1,68 @@
+pragma solidity ^0.5.0;
+
+
+contract AddressRegistry {
+
+    event AddressSet(string name, address addr);
+    mapping(bytes32 => address) registry;
+
+    constructor() public {
+        registry[keccak256(abi.encodePacked("admin"))] = msg.sender;
+        registry[keccak256(abi.encodePacked("owner"))] = msg.sender;
+    }
+
+    function getAddress(string memory name) public view returns(address) {
+        return registry[keccak256(abi.encodePacked(name))];
+    }
+
+    function setAddress(string memory name, address addr) public {
+        require(
+            msg.sender == getAddress("admin") || 
+            msg.sender == getAddress("owner"),
+            "Permission Denied"
+        );
+        registry[keccak256(abi.encodePacked(name))] = addr;
+        emit AddressSet(name, addr);
+    }
+
+    modifier isAdmin() {
+        require(
+            msg.sender == getAddress("admin"),
+            "Permission Denied"
+        );
+        _;
+    }
+
+}
+
+
+contract LogicRegistry is AddressRegistry {
+    event DefaultLogicSet(address logicAddr);
+    event LogicSet(address logicAddr, bool isLogic);
+
+    mapping(address => bool) public defaultLogicProxies;
+    mapping(address => bool) public logicProxies;
+
+    function getLogic(address logicAddr) public view returns (bool) {
+        if (defaultLogicProxies[logicAddr]) {
+            return true;
+        } else if (logicProxies[logicAddr]) {
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    function setLogic(address logicAddr, bool isLogic) public isAdmin {
+        require(msg.sender == getAddress("admin"), "Permission Denied");
+        logicProxies[logicAddr] = true;
+        emit LogicSet(logicAddr, isLogic);
+    }
+
+    function setDefaultLogic(address logicAddr) public isAdmin {
+        require(msg.sender == getAddress("admin"), "Permission Denied");
+        defaultLogicProxies[logicAddr] = true;
+        emit DefaultLogicSet(logicAddr);
+    }
+
+}
diff --git a/contracts/LogicRegistry.sol b/contracts/LogicRegistry.sol
deleted file mode 100644
index efa202f..0000000
--- a/contracts/LogicRegistry.sol
+++ /dev/null
@@ -1,56 +0,0 @@
-pragma solidity ^0.5.0;
-
-interface AddrRegistry {
-    function getAddr(string calldata) external view returns (address);
-}
-
-
-contract AddressRegistry {
-    address public registry;
-
-    modifier onlyAdmin() {
-        require(msg.sender == getAddress("admin"), "Permission Denied");
-        _;
-    }
-
-    function getAddress(string memory name) internal view returns (address) {
-        AddrRegistry addrReg = AddrRegistry(registry);
-        return addrReg.getAddr(name);
-    }
-}
-
-
-contract LogicRegistry is AddressRegistry {
-    event DefaultLogicSet(address logicAddr);
-    event LogicSet(address logicAddr, bool isLogic);
-
-    mapping(address => bool) public defaultLogicProxies;
-    mapping(address => bool) public logicProxies;
-
-    constructor(address registry_) public {
-        registry = registry_;
-    }
-
-    function getLogic(address logicAddr) public view returns (bool) {
-        if (defaultLogicProxies[logicAddr]) {
-            return true;
-        } else if (logicProxies[logicAddr]) {
-            return true;
-        } else {
-            return false;
-        }
-    }
-
-    function setLogic(address logicAddr, bool isLogic) public onlyAdmin {
-        require(msg.sender == getAddress("admin"), "Permission Denied");
-        logicProxies[logicAddr] = true;
-        emit LogicSet(logicAddr, isLogic);
-    }
-
-    function setDefaultLogic(address logicAddr) public onlyAdmin {
-        require(msg.sender == getAddress("admin"), "Permission Denied");
-        defaultLogicProxies[logicAddr] = true;
-        emit DefaultLogicSet(logicAddr);
-    }
-
-}
diff --git a/contracts/ProxyRegistry.sol b/contracts/ProxyRegistry.sol
index 0586a24..e468e08 100644
--- a/contracts/ProxyRegistry.sol
+++ b/contracts/ProxyRegistry.sol
@@ -12,14 +12,11 @@ contract ProxyRegistry {
         logicProxyAddr = logicProxyAddr_;
     }
 
-    // deploys a new proxy instance
-    // sets owner of proxy to caller
     function build(uint activeDays) public returns (UserProxy proxy) {
         proxy = build(msg.sender, activeDays);
     }
 
-    // deploys a new proxy instance
-    // sets custom owner of proxy
+    // deploys a new proxy instance and sets custom owner of proxy
     function build(address owner, uint activeDays) public returns (UserProxy proxy) {
         require(
             proxies[owner] == UserProxy(0) || proxies[owner].owner() != owner, 
diff --git a/contracts/UserProxy.sol b/contracts/UserProxy.sol
index bad7f2e..485cc3e 100644
--- a/contracts/UserProxy.sol
+++ b/contracts/UserProxy.sol
@@ -93,7 +93,7 @@ contract UserNote {
 }
 
 
-interface LogicRegistry {
+interface AddressRegistry {
     function getLogic(address logicAddr) external view returns (bool);
 }
 
@@ -101,8 +101,8 @@ interface LogicRegistry {
 // checking if the logic proxy is authorised
 contract UserLogic {
     address public logicProxyAddr;
-    function isAuthorisedLogic(address logicAddr) internal view returns (bool) {
-        LogicRegistry logicProxy = LogicRegistry(logicProxyAddr);
+    function isLogicAuthorised(address logicAddr) internal view returns (bool) {
+        AddressRegistry logicProxy = AddressRegistry(logicProxyAddr);
         return logicProxy.getLogic(logicAddr);
     }
 }
@@ -110,17 +110,17 @@ contract UserLogic {
 
 
 contract UserProxy is UserAuth, UserNote, UserLogic {
-    constructor(address logicProxyAddr_, uint activePeriod_) public {
-        logicProxyAddr = logicProxyAddr_;
+    constructor(address _logicProxyAddr, uint _activePeriod) public {
+        logicProxyAddr = _logicProxyAddr;
         lastActivity = block.timestamp;
-        activePeriod = activePeriod_;
+        activePeriod = _activePeriod;
     }
 
     function() external payable {}
 
     function execute(address _target, bytes memory _data) public payable auth note returns (bytes memory response) {
         require(_target != address(0), "user-proxy-target-address-required");
-        require(isAuthorisedLogic(_target), "logic-proxy-address-not-allowed");
+        require(isLogicAuthorised(_target), "logic-proxy-address-not-allowed");
         lastActivity = block.timestamp;
         // call contract in current context
         assembly {