--- pdb.py.orig	2014-02-05 22:45:40.712329816 +0100
+++ pdb.py	2014-02-05 22:46:33.612329382 +0100
@@ -165,13 +165,11 @@ class Pdb(bdb.Bdb, cmd.Cmd):
 
         # Read $HOME/.pdbrc and ./.pdbrc
         self.rcLines = []
-        if 'HOME' in os.environ:
-            envHome = os.environ['HOME']
-            try:
-                with open(os.path.join(envHome, ".pdbrc")) as rcFile:
-                    self.rcLines.extend(rcFile)
-            except IOError:
-                pass
+        try:
+            with open(os.path.expanduser("~/.pdbrc")) as rcFile:
+                self.rcLines.extend(rcFile)
+        except IOError:
+            pass
         try:
             with open(".pdbrc") as rcFile:
                 self.rcLines.extend(rcFile)