diff --git a/Apollo/api/application/models/Subject_model.php b/Apollo/api/application/models/Subject_model.php
index 37f3d269..06f5bffa 100644
--- a/Apollo/api/application/models/Subject_model.php
+++ b/Apollo/api/application/models/Subject_model.php
@@ -15,12 +15,12 @@ class Subject_model extends CI_Model
         
                 $this->db->select('SubjectCode');
                 $this->db->where('SubjectCode',$arrayDetails['SubjectCode']);
-                if($this->db->get('T_SubjectMaster')->first_row()){
+                if($this->db->get(SUBJECTMASTER)->first_row()){
                     $result['SubjectStatus']=false;
                     $result['message']="This subject code already exists";
                 }else{
 
-                $this->db->insert('T_SubjectMaster',$arrayDetails);
+                $this->db->insert(SUBJECTMASTER,$arrayDetails);
                 if ($this->db->affected_rows() == '1') {
 
                 $result['SubjectStatus']=true;
@@ -45,12 +45,12 @@ public function updateSubject($arrayDetails=null,$SubjectID=null)
                 $this->db->select('SubjectCode');
                 $this->db->where('SubjectCode',$arrayDetails['SubjectCode']);
                 $this->db->where('SubjectCode !=', $arrayDetails['SubjectCode']);
-            if($this->db->get('T_SubjectMaster')->first_row()){
+            if($this->db->get(SUBJECTMASTER)->first_row()){
                 $result['SubjectStatus']=false;
                 $result['message']="This subject code  is already exists";
             }else{
                 $this->db->where('SubjectID',$SubjectID);
-                $upateStatus=$this->db->update('T_SubjectMaster', $arrayDetails);
+                $upateStatus=$this->db->update(SUBJECTMASTER, $arrayDetails);
         
                        
 
@@ -82,7 +82,7 @@ public function updateSubject($arrayDetails=null,$SubjectID=null)
     {
                 $this->db->select('*');       
                 $this->db->order_by('CreatedOn','DESC');
-                $subjectDetails = $this->db->get('T_SubjectMaster');
+                $subjectDetails = $this->db->get(SUBJECTMASTER);
        
         
                 if($subjectDetails->result()){