diff --git a/device-types/Cisco/ws-2960cg-8tl.yaml b/device-types/Cisco/ws-2960cg-8tl.yaml
index cb76ebfb..fac54c95 100644
--- a/device-types/Cisco/ws-2960cg-8tl.yaml
+++ b/device-types/Cisco/ws-2960cg-8tl.yaml
@@ -12,20 +12,20 @@ power_ports:
     type: iec-60320-c14
 interfaces:
   - name: GigabitEthernet0/1
-    type: 1000BASE-T
+    type: 1000base-t
   - name: GigabitEthernet0/2
-    type: 1000BASE-T
+    type: 1000base-t
   - name: GigabitEthernet0/3
-    type: 1000BASE-T
+    type: 1000base-t
   - name: GigabitEthernet0/4
-    type: 1000BASE-T
+    type: 1000base-t
   - name: GigabitEthernet0/5
-    type: 1000BASE-T
+    type: 1000base-t
   - name: GigabitEthernet0/6
-    type: 1000BASE-T
+    type: 1000base-t
   - name: GigabitEthernet0/7
-    type: 1000BASE-T
+    type: 1000base-t
   - name: GigabitEthernet0/9
-    type: 1000BASE-T
+    type: 1000base-t
   - name: GigabitEthernet0/10
-    type: 1000BASE-T
+    type: 1000base-t