diff --git a/pkgs/os-specific/linux/nss_ldap/default.nix b/pkgs/os-specific/linux/nss_ldap/default.nix
index ef0bdc4f1266..c23eb19a482a 100644
--- a/pkgs/os-specific/linux/nss_ldap/default.nix
+++ b/pkgs/os-specific/linux/nss_ldap/default.nix
@@ -11,6 +11,7 @@ stdenv.mkDerivation {
   preConfigure = ''
     patchShebangs ./vers_string
     sed -i s,vers_string,./vers_string, Makefile*
+    substituteInPlace vers_string --replace "cvslib.pl" "./cvslib.pl"
   '';
 
   patches = [ ./crashes.patch ];