diff --git a/specification/compute/resource-manager/Microsoft.Compute/stable/2019-03-01/disk.json b/specification/compute/resource-manager/Microsoft.Compute/stable/2019-03-01/disk.json
index eb4686849f5d..7e2d7ad352c5 100644
--- a/specification/compute/resource-manager/Microsoft.Compute/stable/2019-03-01/disk.json
+++ b/specification/compute/resource-manager/Microsoft.Compute/stable/2019-03-01/disk.json
@@ -1276,7 +1276,7 @@
         "uploadSizeBytes": {
           "type": "integer",
           "format": "int64",
-          "description": "If createOption is Upload, this is the size of the contents of the upload including the VHD footer. This value should be between 1073741824 (1 GiB + 512 bytes for the VHD footer) and 35183298347520 bytes (32 TiB + 512 bytes for the VHD footer)."
+          "description": "If createOption is Upload, this is the size of the contents of the upload including the VHD footer. This value should be between 20972032 (20 MiB + 512 bytes for the VHD footer) and 35183298347520 bytes (32 TiB + 512 bytes for the VHD footer)."
         }
       },
       "required": [