diff --git a/posthog/client.py b/posthog/client.py
index dcce975e..10cf7156 100644
--- a/posthog/client.py
+++ b/posthog/client.py
@@ -670,7 +670,7 @@ def get_feature_flag_payload(
             decide_payloads = self.get_feature_payloads(
                 distinct_id, groups, person_properties, group_properties, disable_geoip
             )
-            response = decide_payloads.get(str(key).lower(), None)
+            response = decide_payloads.get(str(key), None)
 
         return response