diff --git a/utils/pna.py b/utils/pna.py
index 4c55e74..fa54cd1 100644
--- a/utils/pna.py
+++ b/utils/pna.py
@@ -25,6 +25,10 @@ class PNAClient:
         response = requests.post(self.normal_sale_request_url, json=data)
         print(response.json())
 
+        tmp = {}
+        for key, value in response.json().items():
+            tmp[key.lower()] = value
+
         response_json_sample = {
             "Token": "MTIzNDU2Nzg5MTA=",
             "Message": "عملیات موفق",
@@ -44,7 +48,7 @@ class PNAClient:
             'traceId': '00-2e5835d18d02352de88318defe53ebc7-bf6082b6fb9f964c-00'
         }
 
-        return response.json()
+        return tmp
 
     def request_normal_sale_confirm(self, token):
         data = {
@@ -63,7 +67,12 @@ class PNAClient:
 
         response = requests.post(self.normal_sale_confirm_url, json=data)
         print(response.json())
-        return response.json()
+
+        tmp = {}
+        for key, value in response.json().items():
+            tmp[key.lower()] = value
+
+        return tmp
 
     def request_normal_sale_reverse(self, token):
         data = {