diff --git a/compress/compress.py b/compress/compress.py
index 0cff043..4d2cec2 100644
--- a/compress/compress.py
+++ b/compress/compress.py
@@ -40,7 +40,6 @@ def __init__(self, api_key :str , customer_name : str):
         self.api_key        = api_key
         self.customer_name  = customer_name
         self.req            = requests.Session()
-        self.req.base_url   = TNGRM_BASE_URL
         self.client_id      = customer_name + "_client"
     #
     #/**
@@ -53,7 +52,7 @@ def __init__(self, api_key :str , customer_name : str):
     #  }
     # */
     def get_s3_space(self):
-        return self.req.post( S3_SPACE, 
+        return self.req.post(TNGRM_BASE_URL + S3_SPACE, 
             headers={
                 "Content-Type": "application/json",
             },
@@ -70,11 +69,11 @@ def get_s3_space(self):
     # * @returns list of categories of the customer
     # */
     def get_categories(self):
-        return self.req.post( GET_CATEGORIES, 
+        return self.req.post(TNGRM_BASE_URL + GET_CATEGORIES, 
             headers={
                 "Content-Type": "application/json",
             },
-            body = json.dumps({
+            body = json.dumps(({
                 "api_key": self.api_key,
                 "client_id": self.client_id,
             })
diff --git a/compress/tests/test_connection.py b/compress/tests/test_connection.py
index 6b02124..4814953 100644
--- a/compress/tests/test_connection.py
+++ b/compress/tests/test_connection.py
@@ -37,7 +37,6 @@ class TestConnection(unittest.TestCase):
     #
     def setUp(self):
         self._conn = requests.Session()
-        self._conn.base_url = TNGRM_BASE_URL
     #
     @all_requests
     def response_content_success(self, url, request):
@@ -47,7 +46,7 @@ def response_content_success(self, url, request):
     #
     def test_raw_get(self):
         with HTTMock(self.response_content_success):
-            resp = self._conn.get("/health")
+            resp = self._conn.get(TNGRM_BASE_URL + "/health")
         self.assertEqual(resp.content, b'response_ok')
         self.assertEqual(resp.status_code, 200)
     #