diff --git a/dpugen/saigen/outbound_routing.py b/dpugen/saigen/outbound_routing.py
index a4741db..0be839f 100644
--- a/dpugen/saigen/outbound_routing.py
+++ b/dpugen/saigen/outbound_routing.py
@@ -125,7 +125,7 @@ def items(self):
                                 'key': {
                                     'switch_id': '$SWITCH_ID',
                                     'eni_id': f'$eni_#{eni}',
-                                    'destination': f'{ip}/{route['mask']}'
+                                    'destination': f'{ip}/{route["mask"]}'
                                 },
                                 'attributes': [
                                     'SAI_OUTBOUND_ROUTING_ENTRY_ATTR_ACTION', 'SAI_OUTBOUND_ROUTING_ENTRY_ACTION_ROUTE_VNET',
@@ -142,7 +142,7 @@ def items(self):
                                 'key': {
                                     'switch_id': '$SWITCH_ID',
                                     'eni_id': f'$eni_#{eni}',
-                                    'destination': f'{ip}/{route['mask']}'
+                                    'destination': f'{ip}/{route["mask"]}'
                                 },
                                 'attributes': [
                                     'SAI_OUTBOUND_ROUTING_ENTRY_ATTR_ACTION', 'SAI_OUTBOUND_ROUTING_ENTRY_ACTION_ROUTE_VNET_DIRECT',