diff --git a/packages/nodes-base/nodes/TheHiveProject/actions/alert/create.operation.ts b/packages/nodes-base/nodes/TheHiveProject/actions/alert/create.operation.ts
index 911ebf26b3..a57a4ef102 100644
--- a/packages/nodes-base/nodes/TheHiveProject/actions/alert/create.operation.ts
+++ b/packages/nodes-base/nodes/TheHiveProject/actions/alert/create.operation.ts
@@ -152,8 +152,9 @@ export async function execute(
 
 					const binaryPropertyName = value.binaryProperty as string;
 					const binaryData = this.helpers.assertBinaryData(i, binaryPropertyName);
+					const dataBuffer = await this.helpers.getBinaryDataBuffer(i, binaryPropertyName);
 
-					formData.append(attachmentIndex, binaryData.data, {
+					formData.append(attachmentIndex, dataBuffer, {
 						filename: binaryData.fileName,
 						contentType: binaryData.mimeType,
 					});