diff --git a/api/services/ocean/aksV2/schemas/ocean-vmSizes.yaml b/api/services/ocean/aksV2/schemas/ocean-vmSizes.yaml
index 767c27130..830550443 100644
--- a/api/services/ocean/aksV2/schemas/ocean-vmSizes.yaml
+++ b/api/services/ocean/aksV2/schemas/ocean-vmSizes.yaml
@@ -84,13 +84,13 @@ properties:
         type: string
         description: |
           The filtered vm sizes will support at least one of the classes from this list.
-        enum: [ Standard, Premium ]
+        enum: [ "Standard", "Premium" ]
         example: Standard
       acceleratedNetworking:
         type: string
         description: |
           In case acceleratedNetworking is set to Enabled, accelerated networking applies only to the VM that enables it.
-        enum: [ Enabled, Disabled ]
+        enum: [ "Enabled", "Disabled" ]
         example: Enabled
       minNICs:
         description: |