diff --git a/smsmsg91.admin.inc b/smsmsg91.admin.inc
index 18b3d40..e7fc1a1 100644
--- a/smsmsg91.admin.inc
+++ b/smsmsg91.admin.inc
@@ -46,15 +46,15 @@ function smsmsg91_admin_settings() {
  */
 function smsmsg91_admin_form_validate($form, &$form_state) {
   $route = $form_state['values']['smsmsg91_route'];
-  $authKey = $form_state['values']['smsmsg91_authKey'];
+  $auth_key = $form_state['values']['smsmsg91_authKey'];
   if ($route < 1 || $route > 6) {
     form_set_error('smsmsg91_route', t('Route: Please enter number between 1 and 6.'));
   }
 
-  $msg91AuthUrl = "https://control.msg91.com/api/validate.php?authkey=" . $authKey;
-  $validateResponse = drupal_http_request($msg91AuthUrl);
+  $msg91_auth_url = "https://control.msg91.com/api/validate.php?authkey=" . $auth_key;
+  $validate_response = drupal_http_request($msg91_auth_url);
 
-  if ($validateResponse->data != 'Valid') {
+  if ($validate_response->data != 'Valid') {
     form_set_error('smsmsg91_authKey', t('Auth key you have entered doesnot validate.'));
   }
 
diff --git a/smsmsg91.module b/smsmsg91.module
index 6ba9e53..73a10f6 100644
--- a/smsmsg91.module
+++ b/smsmsg91.module
@@ -103,14 +103,14 @@ function smsmsg91_sms_form_submit($form, &$form_state) {
   /*Send SMS using PHP*/
 
   // This will be set up from Settings variables.
-  $authKey = variable_get('smsmsg91_authKey');
+  $auth_key = variable_get('smsmsg91_authKey');
 
   // Multiple mobiles numbers separated by comma.
-  $mobileNumber = $mobile;
+  $mobile_number = $mobile;
 
   // Sender ID,While using route4 sender id should be 6 characters long.
   // To be set up in settings variables.
-  $senderId = variable_get('smsmsg91_senderID');
+  $sender_id = variable_get('smsmsg91_senderID');
 
   // Your message to send, Add URL encoding here.
   $message = urlencode($sms_message);
@@ -119,7 +119,7 @@ function smsmsg91_sms_form_submit($form, &$form_state) {
   $route = variable_get('smsmsg91_route');
   // Prepare you post parameters.
   // Function for sending message.
-  smsmsg91_send_message($mobileNumber, $message, $senderId, $route);
+  smsmsg91_send_message($mobile_number, $message, $sender_id, $route);
 
   // To be decided $form_state['redirect'] = '/';.
 }
@@ -127,28 +127,28 @@ function smsmsg91_sms_form_submit($form, &$form_state) {
 /**
  * Function for sending SMS.
  */
-function smsmsg91_send_message($mobileNumber, $message, $senderId, $route) {
+function smsmsg91_send_message($mobile_number, $message, $sender_id, $route) {
 
-  if (empty($mobileNumber)) {
+  if (empty($mobile_number)) {
     watchdog('SMSMSG91', 'Please provide mobile number for sending SMS', WATCHDOG_ERROR);
     return FALSE;
   }
-  if (empty($senderId)) {
-    $senderId = variable_get('smsmsg91_senderID');
+  if (empty($sender_id)) {
+    $sender_id = variable_get('smsmsg91_senderID');
   }
   if (empty($route)) {
     $route = variable_get('smsmsg91_route');
   }
 
-  $authKey = variable_get('smsmsg91_authKey', '');
+  $auth_key = variable_get('smsmsg91_authKey', '');
 
-  if (!empty($authKey)) {
+  if (!empty($auth_key)) {
 
-    $postData = array(
-      'authkey' => $authKey,
-      'mobiles' => $mobileNumber,
+    $post_data = array(
+      'authkey' => $auth_key,
+      'mobiles' => $mobile_number,
       'message' => $message,
-      'sender' => $senderId,
+      'sender' => $sender_id,
       'route' => $route,
     );
 
@@ -161,7 +161,7 @@ function smsmsg91_send_message($mobileNumber, $message, $senderId, $route) {
       CURLOPT_URL => $url,
       CURLOPT_RETURNTRANSFER => TRUE,
       CURLOPT_POST => TRUE,
-      CURLOPT_POSTFIELDS => $postData,
+      CURLOPT_POSTFIELDS => $post_data,
           // ,CURLOPT_FOLLOWLOCATION => true.
     ));
 
@@ -179,8 +179,8 @@ function smsmsg91_send_message($mobileNumber, $message, $senderId, $route) {
     }
 
     curl_close($ch);
-    drupal_set_message('SMS Sent');
-    watchdog('SMSMSG91', 'SMS sent to Mobile Number %mobileNumber', array('%mobileNumber' => $mobileNumber));
+    drupal_set_message(t('SMS Sent'));
+    watchdog('SMSMSG91', 'SMS sent to Mobile Number %mobileNumber', array('%mobileNumber' => $mobile_number));
 
   }
   else {