diff --git a/gso/workflows/l2_circuit/create_layer_2_circuit.py b/gso/workflows/l2_circuit/create_layer_2_circuit.py
index a3199bc1ad2ea56f6ed62a66f075216fa0e99881..723c5c37652701a7d885e59158fe54f3973a041d 100644
--- a/gso/workflows/l2_circuit/create_layer_2_circuit.py
+++ b/gso/workflows/l2_circuit/create_layer_2_circuit.py
@@ -48,7 +48,7 @@ def initial_input_generator(product_name: str) -> FormGenerator:
         )
         vlan_id: VLAN_ID
 
-    def _vlan_range_field(*, is_tagged: bool) -> VLAN_ID:
+    def _vlan_range_field(*, is_tagged: bool) -> VLAN_ID | int:
         """Return the appropriate field type based on whether the circuit is tagged."""
         return VLAN_ID if is_tagged else ReadOnlyField(None, default_type=int)