diff --git a/ec2_function.py b/ec2_function.py
index 637a8cc8b67314d36b8d95b356648175d7fac41d..8138bb787bd3e6950950b92e89392938e5740998 100644
--- a/ec2_function.py
+++ b/ec2_function.py
@@ -9,6 +9,8 @@ import sys
 
 request_body = sys.stdin.read()
 
+input_json = json.loads(request_body)
+
 minhistory = int(input_json['history'])
 shots = int(input_json['shots'])
 signaltype = str(input_json['signal_type'])