diff --git a/pySim/esim/http_json_api.py b/pySim/esim/http_json_api.py
index 28022ffa..0154947e 100644
--- a/pySim/esim/http_json_api.py
+++ b/pySim/esim/http_json_api.py
@@ -337,7 +337,7 @@ class JsonHttpApiClient():
         # SGP.22, section 6.5.1)
         if response.status_code != self.api_func.expected_http_status:
             raise HttpStatusError(response)
-        if response.content and not response.headers.get('Content-Type').startswith(req_headers['Content-Type']):
+        if not response.headers.get('Content-Type').startswith(req_headers['Content-Type']):
             raise HttpHeaderError(response)
         if not response.headers.get('X-Admin-Protocol', 'gsma/rsp/v2.unknown').startswith('gsma/rsp/v2.'):
             raise HttpHeaderError(response)