diff --git a/pkgs/servers/sql/postgresql/9.2.x.nix b/pkgs/servers/sql/postgresql/9.2.x.nix
index 89de740b303..1bf3de527a3 100644
--- a/pkgs/servers/sql/postgresql/9.2.x.nix
+++ b/pkgs/servers/sql/postgresql/9.2.x.nix
@@ -14,13 +14,11 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
-  LC_ALL = "C";
+  makeFlags = [ "world" ];
 
-  postInstall =
-    ''
-      mkdir -p $out/share/man
-      cp -rvd doc/src/sgml/man1 $out/share/man
-    '';
+  installTargets = [ "install-world" ];
+
+  LC_ALL = "C";
 
   passthru = {
     inherit readline;