diff --git a/contracts/IdentityFactory.sol b/contracts/IdentityFactory.sol
index 2c581d2..5c83695 100644
--- a/contracts/IdentityFactory.sol
+++ b/contracts/IdentityFactory.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.4.11;
+pragma solidity 0.4.11;
 import "./RecoveryQuorum.sol";
 
 
diff --git a/contracts/IdentityFactoryWithRecoveryKey.sol b/contracts/IdentityFactoryWithRecoveryKey.sol
index c6e0db3..1ee2ece 100644
--- a/contracts/IdentityFactoryWithRecoveryKey.sol
+++ b/contracts/IdentityFactoryWithRecoveryKey.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.4.11;
+pragma solidity 0.4.11;
 import "./RecoverableController.sol";
 
 
diff --git a/contracts/IdentityManager.sol b/contracts/IdentityManager.sol
index f9990c8..797f220 100644
--- a/contracts/IdentityManager.sol
+++ b/contracts/IdentityManager.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.4.11;
+pragma solidity 0.4.11;
 import "./Proxy.sol";
 
 contract IdentityManager {
diff --git a/contracts/MetaIdentityManager.sol b/contracts/MetaIdentityManager.sol
index c21f16f..71b0361 100644
--- a/contracts/MetaIdentityManager.sol
+++ b/contracts/MetaIdentityManager.sol
@@ -56,7 +56,7 @@ contract MetaIdentityManager {
   }
 
   modifier onlyOwner(address identity, address sender) {
-    if (owners[identity][sender] > 0 && (owners[identity][sender] + userTimeLock) <= now ) _ ;
+    if (isOwner(identity, sender)) _ ;
     else throw;
   }
 
diff --git a/contracts/Proxy.sol b/contracts/Proxy.sol
index 6d38c0d..ff32e2e 100644
--- a/contracts/Proxy.sol
+++ b/contracts/Proxy.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.4.11;
+pragma solidity 0.4.11;
 import "./libs/Owned.sol";
 
 
diff --git a/contracts/RecoverableController.sol b/contracts/RecoverableController.sol
index 2f026d1..9e9f9bf 100644
--- a/contracts/RecoverableController.sol
+++ b/contracts/RecoverableController.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.4.11;
+pragma solidity 0.4.11;
 import "./Proxy.sol";
 
 
@@ -92,4 +92,3 @@ contract RecoverableController {
         userKey = _userKey;
     }
 }
-
diff --git a/contracts/RecoveryQuorum.sol b/contracts/RecoveryQuorum.sol
index b177ded..4d78de6 100644
--- a/contracts/RecoveryQuorum.sol
+++ b/contracts/RecoveryQuorum.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.4.11;
+pragma solidity 0.4.11;
 import "./RecoverableController.sol";
 import "./libs/ArrayLib.sol";
 
diff --git a/contracts/libs/Owned.sol b/contracts/libs/Owned.sol
index ca15699..a042af9 100644
--- a/contracts/libs/Owned.sol
+++ b/contracts/libs/Owned.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.4.11;
+pragma solidity 0.4.11;
 
 
 contract Owned {
diff --git a/contracts/misc/Migrations.sol b/contracts/misc/Migrations.sol
index 4dd0c07..d97d245 100644
--- a/contracts/misc/Migrations.sol
+++ b/contracts/misc/Migrations.sol
@@ -1,4 +1,5 @@
-pragma solidity ^0.4.11;
+pragma solidity 0.4.11;
+
 
 contract Migrations {
   address public owner;
diff --git a/contracts/misc/TestRegistry.sol b/contracts/misc/TestRegistry.sol
index c62af9d..862726a 100644
--- a/contracts/misc/TestRegistry.sol
+++ b/contracts/misc/TestRegistry.sol
@@ -1,5 +1,5 @@
 // This contract is only used for testing purposes.
-pragma solidity ^0.4.8;
+pragma solidity 0.4.11;
 
 
 contract TestRegistry {