diff --git a/pkgs/development/libraries/zookeeper_mt/default.nix b/pkgs/development/libraries/zookeeper_mt/default.nix
index 0ec24c828a6..58e1940a3ef 100644
--- a/pkgs/development/libraries/zookeeper_mt/default.nix
+++ b/pkgs/development/libraries/zookeeper_mt/default.nix
@@ -1,7 +1,7 @@
 { stdenv, zookeeper, bash }:
 
 stdenv.mkDerivation rec {
-   name = "zookeeper_mt";
+   name = "zookeeper_mt-${stdenv.lib.getVersion zookeeper}";
    
    src = zookeeper.src;