diff --git a/inmemorystorage/storage.py b/inmemorystorage/storage.py
index 488bfd6..8be6594 100644
--- a/inmemorystorage/storage.py
+++ b/inmemorystorage/storage.py
@@ -110,4 +110,5 @@ def _open(self, name, mode=None):
         return self.filesystem.open(name)
 
     def _save(self, name, content):
-        return self.filesystem.save(name, content.read())
+        data = b''.join(list(content.chunks()))
+        return self.filesystem.save(name, data)