diff --git a/alluxiofs/core.py b/alluxiofs/core.py
index f4d11e0..284de5e 100644
--- a/alluxiofs/core.py
+++ b/alluxiofs/core.py
@@ -545,9 +545,9 @@ def flush(self, force=False):
             self.offset = 0
             try:
                 self._initiate_upload()
-            except:
+            except Exception as e:
                 self.closed = True
-                raise
+                raise e
 
         if self._upload_chunk(final=force) is not False:
             self.offset += self.buffer.seek(0, 2)