diff --git a/pkgs/tools/networking/uwimap/default.nix b/pkgs/tools/networking/uwimap/default.nix
index be3153ba281..5ffeb53dd29 100644
--- a/pkgs/tools/networking/uwimap/default.nix
+++ b/pkgs/tools/networking/uwimap/default.nix
@@ -1,7 +1,7 @@
 {stdenv, fetchurl, pam, openssl}:
 
 stdenv.mkDerivation {
-  name = "uw-imap-2007";
+  name = "uw-imap-2007f";
 
   src = fetchurl {
     url = "ftp://ftp.cac.washington.edu/imap/imap-2007f.tar.gz";