From d70ac77991716c39a31550be639b73af580e1b00 Mon Sep 17 00:00:00 2001
From: mr-bo-jangles <mr-bo-jangles@users.noreply.github.com>
Date: Tue, 1 Aug 2017 07:52:31 +0100
Subject: [PATCH] Ensure that we're reading the file from the start (#373)

---
 storages/backends/s3boto3.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/storages/backends/s3boto3.py b/storages/backends/s3boto3.py
index 727782f76..212179004 100644
--- a/storages/backends/s3boto3.py
+++ b/storages/backends/s3boto3.py
@@ -387,6 +387,7 @@ def _decode_name(self, name):
 
     def _compress_content(self, content):
         """Gzip a given string content."""
+        content.seek(0)
         zbuf = BytesIO()
         zfile = GzipFile(mode='wb', compresslevel=6, fileobj=zbuf)
         try: