diff --git a/attic/helpers.py b/attic/helpers.py
index ac5266980..04f92336d 100644
--- a/attic/helpers.py
+++ b/attic/helpers.py
@@ -481,7 +481,7 @@ def write_msgpack(filename, d):
     with open(filename + '.tmp', 'wb') as fd:
         msgpack.pack(d, fd)
         fd.flush()
-        os.fsync(fd)
+        os.fsync(fd.fileno())
     os.rename(filename + '.tmp', filename)
 
 
diff --git a/attic/repository.py b/attic/repository.py
index eed85dc43..f3a721774 100644
--- a/attic/repository.py
+++ b/attic/repository.py
@@ -577,6 +577,7 @@ class LoggedIO(object):
         if self._write_fd:
             self.segment += 1
             self.offset = 0
-            os.fsync(self._write_fd)
+            self._write_fd.flush()
+            os.fsync(self._write_fd.fileno())
             self._write_fd.close()
             self._write_fd = None