diff --git a/src/compiler/glsl/xxd.py b/src/compiler/glsl/xxd.py
index f8f57d7..23055ce 100644
--- a/src/compiler/glsl/xxd.py
+++ b/src/compiler/glsl/xxd.py
@@ -25,8 +25,7 @@
 from __future__ import unicode_literals
 import argparse
 import io
-import string
-import sys
+import os
 
 
 def get_args():