diff --git a/Lib/CGIHTTPServer.py b/Lib/CGIHTTPServer.py
index cb3f464..e8494a4 100644
--- a/Lib/CGIHTTPServer.py
+++ b/Lib/CGIHTTPServer.py
@@ -271,11 +271,11 @@
                 nbytes = int(length)
             except (TypeError, ValueError):
                 nbytes = 0
-            files = subprocess.Popen(cmdline,
-                                    stdin = subprocess.PIPE,
-                                    stdout = subprocess.PIPE,
-                                    stderr = subprocess.PIPE
-                                    )
+            p = subprocess.Popen(cmdline,
+                                 stdin = subprocess.PIPE,
+                                 stdout = subprocess.PIPE,
+                                 stderr = subprocess.PIPE
+                                )
             if self.command.lower() == "post" and nbytes > 0:
                 data = self.rfile.read(nbytes)
             else: