diff --git a/device-types/Cisco/ISR4331.yaml b/device-types/Cisco/ISR4331.yaml
index 0f06be92..893091d6 100644
--- a/device-types/Cisco/ISR4331.yaml
+++ b/device-types/Cisco/ISR4331.yaml
@@ -7,8 +7,10 @@ interfaces:
   - name: GigabitEthernet0
     type: 1000base-t
     mgmt_only: true
+  - name: GigabitEthernet0/0/0
+    type: 1000base-x-sfp
   - name: GigabitEthernet0/0/1
-    type: 1000base-t
+    type: 1000base-t    
   - name: GigabitEthernet0/0/2
     type: 1000base-x-sfp
 console-ports: