diff --git a/src/api/rest/docs/docs.go b/src/api/rest/docs/docs.go
index 12e576b9..faf54e72 100644
--- a/src/api/rest/docs/docs.go
+++ b/src/api/rest/docs/docs.go
@@ -11564,7 +11564,7 @@ const docTemplate = `{
                     "type": "string",
                     "example": "3"
                 },
-                "vmUserPassword default:": {
+                "vmUserPassword": {
                     "type": "string"
                 }
             }
diff --git a/src/api/rest/docs/swagger.json b/src/api/rest/docs/swagger.json
index a5e6db71..98824417 100644
--- a/src/api/rest/docs/swagger.json
+++ b/src/api/rest/docs/swagger.json
@@ -11557,7 +11557,7 @@
                     "type": "string",
                     "example": "3"
                 },
-                "vmUserPassword default:": {
+                "vmUserPassword": {
                     "type": "string"
                 }
             }
diff --git a/src/api/rest/docs/swagger.yaml b/src/api/rest/docs/swagger.yaml
index f32e036a..3488e702 100644
--- a/src/api/rest/docs/swagger.yaml
+++ b/src/api/rest/docs/swagger.yaml
@@ -2399,7 +2399,7 @@ definitions:
           VMs will be created accordingly.
         example: "3"
         type: string
-      'vmUserPassword default:':
+      vmUserPassword:
         type: string
     required:
     - commonImage
diff --git a/src/core/mcis/provisioning.go b/src/core/mcis/provisioning.go
index f70f54a4..3fd2824a 100644
--- a/src/core/mcis/provisioning.go
+++ b/src/core/mcis/provisioning.go
@@ -242,7 +242,7 @@ type TbVmDynamicReq struct {
 	RootDiskType string `json:"rootDiskType,omitempty" example:"default, TYPE1, ..."`  // "", "default", "TYPE1", AWS: ["standard", "gp2", "gp3"], Azure: ["PremiumSSD", "StandardSSD", "StandardHDD"], GCP: ["pd-standard", "pd-balanced", "pd-ssd", "pd-extreme"], ALIBABA: ["cloud_efficiency", "cloud", "cloud_essd"], TENCENT: ["CLOUD_PREMIUM", "CLOUD_SSD"]
 	RootDiskSize string `json:"rootDiskSize,omitempty" example:"default, 30, 42, ..."` // "default", Integer (GB): ["50", ..., "1000"]
 
-	VmUserPassword string `json:"vmUserPassword default:""`
+	VmUserPassword string `json:"vmUserPassword" default:""`
 	// if ConnectionName is given, the VM tries to use associtated credential.
 	// if not, it will use predefined ConnectionName in Spec objects
 	ConnectionName string `json:"connectionName,omitempty" default:""`