diff --git a/pkgs/applications/editors/emacs/default.nix b/pkgs/applications/editors/emacs/default.nix
index 63f8b1ecb00..d0ee37b01ce 100644
--- a/pkgs/applications/editors/emacs/default.nix
+++ b/pkgs/applications/editors/emacs/default.nix
@@ -9,7 +9,7 @@ assert xpmSupport -> libXpm != null;
 assert xaw3dSupport -> Xaw3d != null;
 
 stdenv.mkDerivation {
-  name = "emacs-21.4a-Z";
+  name = "emacs-21.4a";
   builder = ./builder.sh;
   src = fetchurl {
     url = http://ftp.gnu.org/pub/gnu/emacs/emacs-21.4a.tar.gz;