diff --git a/build/dump_syms.py b/build/dump_syms.py
index c49b1737d4e0d..562b8c00814aa 100644
--- a/build/dump_syms.py
+++ b/build/dump_syms.py
@@ -4,6 +4,7 @@
 import os
 import subprocess
 import sys
+import errno
 
 # The BINARY_INFO tuple describes a binary as dump_syms identifies it.
 BINARY_INFO = collections.namedtuple('BINARY_INFO',