diff --git a/iota/commands/extended/get_inputs.py b/iota/commands/extended/get_inputs.py
index aaeb5d5..77d62c1 100644
--- a/iota/commands/extended/get_inputs.py
+++ b/iota/commands/extended/get_inputs.py
@@ -39,7 +39,7 @@ def _execute(self, request):
     seed      = request['seed'] # type: Seed
     start     = request['start'] # type: int
     threshold = request['threshold'] # type: Optional[int]
-    security_level = request['securityLevel'] # type: Optional[int]
+    security_level = request['securityLevel'] # int
 
     # Determine the addresses we will be scanning.
     if stop is None:
diff --git a/iota/commands/extended/prepare_transfer.py b/iota/commands/extended/prepare_transfer.py
index 390e218..cd3cb90 100644
--- a/iota/commands/extended/prepare_transfer.py
+++ b/iota/commands/extended/prepare_transfer.py
@@ -44,7 +44,7 @@ def _execute(self, request):
     # Optional parameters.
     change_address  = request.get('changeAddress') # type: Optional[Address]
     proposed_inputs = request.get('inputs') # type: Optional[List[Address]]
-    security_level = request['securityLevel'] # type: Optional[int]
+    security_level = request['securityLevel'] # type: int
 
     want_to_spend = bundle.balance
     if want_to_spend > 0:
diff --git a/iota/commands/extended/send_transfer.py b/iota/commands/extended/send_transfer.py
index b456c8a..7c5060d 100644
--- a/iota/commands/extended/send_transfer.py
+++ b/iota/commands/extended/send_transfer.py
@@ -40,7 +40,7 @@ def _execute(self, request):
     seed                  = request['seed'] # type: Seed
     transfers             = request['transfers'] # type: List[ProposedTransaction]
     reference             = request['reference'] # type: Optional[TransactionHash]
-    security_level        = request['securityLevel'] # type: Optional[int]
+    security_level        = request['securityLevel'] # int
 
     pt_response = PrepareTransferCommand(self.adapter)(
       changeAddress   = change_address,