diff --git a/pkgs/top-level/perl-packages.nix b/pkgs/top-level/perl-packages.nix
index 80f7410d4ac..4091ecda584 100644
--- a/pkgs/top-level/perl-packages.nix
+++ b/pkgs/top-level/perl-packages.nix
@@ -1518,7 +1518,8 @@ rec {
   };
 
   DBDPg = import ../development/perl-modules/DBD-Pg {
-    inherit stdenv fetchurl buildPerlPackage DBI postgresql;
+    inherit stdenv fetchurl buildPerlPackage DBI;
+    inherit (pkgs) postgresql;
   };
 
   DBFile = import ../development/perl-modules/DB_File {