diff --git a/sinch/domains/verification/endpoints/start_verification.py b/sinch/domains/verification/endpoints/start_verification.py
index e02f1fd..bc4f5b5 100644
--- a/sinch/domains/verification/endpoints/start_verification.py
+++ b/sinch/domains/verification/endpoints/start_verification.py
@@ -27,11 +27,6 @@ def build_url(self, sinch):
         )
 
     def request_body(self):
-        if self.request_data.method == VerificationMethod.FLASHCALL.value:
-            request_data = deepcopy(self.request_data)
-            request_data.method = "flashCall"
-            return request_data.as_json()
-
         return self.request_data.as_json()
 
     def handle_response(self, response: HTTPResponse) -> StartVerificationResponse: