diff --git a/Lib/distutils/msvc9compiler.py b/Lib/distutils/msvc9compiler.py
index 615d8b8..bf85ac7 100644
--- a/Lib/distutils/msvc9compiler.py
+++ b/Lib/distutils/msvc9compiler.py
@@ -292,7 +292,6 @@
                 result[key] = removeDuplicates(value)
 
     finally:
-        popen.stdin.close()
         popen.stdout.close()
         popen.stderr.close()