From bbc08f8c0d9bcd26f6f9f698fcc5ee5ff59c52ba Mon Sep 17 00:00:00 2001
From: Chris Kings-Lynne <chris.kings-lynne@healthengine.com.au>
Date: Fri, 12 Mar 2021 11:04:40 +0800
Subject: [PATCH] Apply fix

---
 target_redshift/s3.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target_redshift/s3.py b/target_redshift/s3.py
index eb64818..4d8e731 100644
--- a/target_redshift/s3.py
+++ b/target_redshift/s3.py
@@ -29,7 +29,7 @@ def credentials(self):
         return self._credentials
 
     def persist(self, readable, key_prefix=''):
-        key = self.key_prefix + key_prefix + str(uuid.uuid4()).replace('-', '')
+        key = self.key_prefix + (key_prefix or '') + str(uuid.uuid4()).replace('-', '')
 
         self.client.upload_fileobj(
             _EncodeBinaryReadable(readable),