diff --git a/packages/builder/src/components/design/settings/controls/ButtonActionEditor/actions/DownloadFile.svelte b/packages/builder/src/components/design/settings/controls/ButtonActionEditor/actions/DownloadFile.svelte
index 6a9cc7b02c..674b766de6 100644
--- a/packages/builder/src/components/design/settings/controls/ButtonActionEditor/actions/DownloadFile.svelte
+++ b/packages/builder/src/components/design/settings/controls/ButtonActionEditor/actions/DownloadFile.svelte
@@ -57,8 +57,8 @@
     <DrawerBindableInput
       title="File name"
       {bindings}
-      value={parameters.file_name}
-      on:change={value => (parameters.file_name = value.detail)}
+      value={parameters.fileName}
+      on:change={value => (parameters.fileName = value.detail)}
     />
   {/if}
 </div>
diff --git a/packages/client/src/utils/buttonActions.js b/packages/client/src/utils/buttonActions.js
index 612465323b..7564f3f36d 100644
--- a/packages/client/src/utils/buttonActions.js
+++ b/packages/client/src/utils/buttonActions.js
@@ -402,11 +402,11 @@ const closeSidePanelHandler = () => {
 
 const downloadFileHandler = async (action, _context) => {
   try {
-    let { url, file_name, type, attachment } = action.parameters
+    let { url, fileName, type, attachment } = action.parameters
     if (type === "attachment") {
       const attachmentObject = JSON.parse(attachment)
       url = attachmentObject.url
-      file_name = attachmentObject.name
+      fileName = attachmentObject.name
     }
 
     const response = await fetch(url)
@@ -419,7 +419,7 @@ const downloadFileHandler = async (action, _context) => {
 
     const link = document.createElement("a")
     link.href = objectUrl
-    link.download = file_name
+    link.download = fileName
     link.click()
 
     URL.revokeObjectURL(objectUrl)