diff --git a/web/app/components/workflow/variable-inspect/value-content.tsx b/web/app/components/workflow/variable-inspect/value-content.tsx
index a3ede311c4..c8233d1fa2 100644
--- a/web/app/components/workflow/variable-inspect/value-content.tsx
+++ b/web/app/components/workflow/variable-inspect/value-content.tsx
@@ -71,7 +71,7 @@ const ValueContent = ({
       setValue(currentVar.value)
     }
     if (showJSONEditor)
-      setJson(currentVar.value ? JSON.stringify(currentVar.value, null, 2) : '')
+      setJson(currentVar.value != null ? JSON.stringify(currentVar.value, null, 2) : '')
 
     if (showFileEditor)
       setFileValue(formatFileValue(currentVar))