diff --git a/src/renderer/src/providers/BaseProvider.ts b/src/renderer/src/providers/BaseProvider.ts
index 643ded6a..73ced133 100644
--- a/src/renderer/src/providers/BaseProvider.ts
+++ b/src/renderer/src/providers/BaseProvider.ts
@@ -103,10 +103,10 @@ export default abstract class BaseProvider {
         }
         if (param.type === 'json') {
           const value = param.value as string
-          return {
-            ...acc,
-            [param.name]: isJSON(value) ? parseJSON(value) : value
+          if (value === 'undefined') {
+            return { ...acc, [param.name]: undefined }
           }
+          return { ...acc, [param.name]: isJSON(value) ? parseJSON(value) : value }
         }
         return {
           ...acc,
diff --git a/src/renderer/src/utils/index.ts b/src/renderer/src/utils/index.ts
index 94f8402c..6c43e43c 100644
--- a/src/renderer/src/utils/index.ts
+++ b/src/renderer/src/utils/index.ts
@@ -28,10 +28,6 @@ export function isJSON(str: any): boolean {
 }
 
 export function parseJSON(str: string) {
-  if (str === 'undefined') {
-    return undefined
-  }
-
   try {
     return JSON.parse(str)
   } catch (e) {