diff --git a/components/device-mgt/org.wso2.carbon.device.mgt.api/src/main/java/org/wso2/carbon/device/mgt/jaxrs/service/impl/UserManagementServiceImpl.java b/components/device-mgt/org.wso2.carbon.device.mgt.api/src/main/java/org/wso2/carbon/device/mgt/jaxrs/service/impl/UserManagementServiceImpl.java
index eda434e2f8a..9734c9622db 100644
--- a/components/device-mgt/org.wso2.carbon.device.mgt.api/src/main/java/org/wso2/carbon/device/mgt/jaxrs/service/impl/UserManagementServiceImpl.java
+++ b/components/device-mgt/org.wso2.carbon.device.mgt.api/src/main/java/org/wso2/carbon/device/mgt/jaxrs/service/impl/UserManagementServiceImpl.java
@@ -134,14 +134,14 @@ public class UserManagementServiceImpl implements UserManagementService {
     public Response updateUser(@PathParam("username") String username, UserInfo userInfo) {
         try {
             UserStoreManager userStoreManager = DeviceMgtAPIUtils.getUserStoreManager();
-            if (!userStoreManager.isExistingUser(userInfo.getUsername())) {
+            if (!userStoreManager.isExistingUser(username)) {
                 if (log.isDebugEnabled()) {
-                    log.debug("User by username: " + userInfo.getUsername() +
-                            " doesn't exists. Therefore, request made to update user was refused.");
+                    log.debug("User by username: " + username +
+                              " doesn't exists. Therefore, request made to update user was refused.");
                 }
                 return Response.status(Response.Status.NOT_FOUND).entity(
                         new ErrorResponse.ErrorResponseBuilder().setMessage("User by username: " +
-                                userInfo.getUsername() + " doesn't  exist.").build()).build();
+                                                                            username + " doesn't  exist.").build()).build();
             }
 
             Map<String, String> defaultUserClaims =
@@ -149,11 +149,11 @@ public class UserManagementServiceImpl implements UserManagementService {
                             userInfo.getEmailAddress());
             if (StringUtils.isNotEmpty(userInfo.getPassword())) {
                 // Decoding Base64 encoded password
-                userStoreManager.updateCredentialByAdmin(userInfo.getUsername(),
-                        userInfo.getPassword());
-                log.debug("User credential of username: " + userInfo.getUsername() + " has been changed");
+                userStoreManager.updateCredentialByAdmin(username,
+                                                         userInfo.getPassword());
+                log.debug("User credential of username: " + username + " has been changed");
             }
-            List<String> currentRoles = this.getFilteredRoles(userStoreManager, userInfo.getUsername());
+            List<String> currentRoles = this.getFilteredRoles(userStoreManager, username);
             List<String> newRoles = Arrays.asList(userInfo.getRoles());
 
             List<String> rolesToAdd = new ArrayList<>(newRoles);
@@ -167,19 +167,19 @@ public class UserManagementServiceImpl implements UserManagementService {
                 }
             }
             rolesToDelete.remove(ROLE_EVERYONE);
-            userStoreManager.updateRoleListOfUser(userInfo.getUsername(),
-                    rolesToDelete.toArray(new String[rolesToDelete.size()]),
-                    rolesToAdd.toArray(new String[rolesToAdd.size()]));
-            userStoreManager.setUserClaimValues(userInfo.getUsername(), defaultUserClaims, null);
+            userStoreManager.updateRoleListOfUser(username,
+                                                  rolesToDelete.toArray(new String[rolesToDelete.size()]),
+                                                  rolesToAdd.toArray(new String[rolesToAdd.size()]));
+            userStoreManager.setUserClaimValues(username, defaultUserClaims, null);
             // Outputting debug message upon successful addition of user
             if (log.isDebugEnabled()) {
-                log.debug("User by username: " + userInfo.getUsername() + " was successfully updated.");
+                log.debug("User by username: " + username + " was successfully updated.");
             }
 
             BasicUserInfo updatedUserInfo = this.getBasicUserInfo(username);
             return Response.ok().entity(updatedUserInfo).build();
         } catch (UserStoreException e) {
-            String msg = "Error occurred while trying to update user '" + userInfo.getUsername() + "'";
+            String msg = "Error occurred while trying to update user '" + username + "'";
             log.error(msg, e);
             return Response.serverError().entity(
                     new ErrorResponse.ErrorResponseBuilder().setMessage(msg).build()).build();