diff --git a/.github/workflows/mshv-infra.yaml b/.github/workflows/mshv-infra.yaml
index e067e9ea8..18e419f05 100644
--- a/.github/workflows/mshv-infra.yaml
+++ b/.github/workflows/mshv-infra.yaml
@@ -13,7 +13,7 @@ on:
       OS_DISK_SIZE:
         description: 'OS Disk Size in GB'
         required: true
-        type: string
+        type: number
       RG:
         description: 'Resource Group Name'
         required: true