Index: zipfile.py
===================================================================
--- zipfile.py	(revisi¢n: 56539)
+++ zipfile.py	(copia de trabajo)
@@ -838,7 +838,7 @@
                   "Attempt to write to ZIP archive that was already closed")
 
         st = os.stat(filename)
-        mtime = time.localtime(st.st_mtime)
+        mtime = time.localtime(max(0, st.st_mtime))
         date_time = mtime[0:6]
         # Create ZipInfo instance to store file information
         if arcname is None: