diff --git a/nixos/modules/misc/documentation.nix b/nixos/modules/misc/documentation.nix
index 09d53c322fb372..9b2e1235b7481c 100644
--- a/nixos/modules/misc/documentation.nix
+++ b/nixos/modules/misc/documentation.nix
@@ -156,6 +156,7 @@ in
       environment.systemPackages = [ pkgs.man-db ];
       environment.pathsToLink = [ "/share/man" ];
       environment.extraOutputsToInstall = [ "man" ] ++ optional cfg.dev.enable "devman";
+      environment.etc."man.conf".source = "${pkgs.man-db}/etc/man_db.conf";
     })
 
     (mkIf cfg.info.enable {
diff --git a/pkgs/applications/kde/kio-extras.nix b/pkgs/applications/kde/kio-extras.nix
index 13585848317b90..dd717c9462d60b 100644
--- a/pkgs/applications/kde/kio-extras.nix
+++ b/pkgs/applications/kde/kio-extras.nix
@@ -3,7 +3,7 @@
   exiv2, kactivities, karchive, kbookmarks, kconfig, kconfigwidgets,
   kcoreaddons, kdbusaddons, kguiaddons, kdnssd, kiconthemes, ki18n, kio, khtml,
   kdelibs4support, kpty, libmtp, libssh, openexr, ilmbase, openslp, phonon,
-  qtsvg, samba, solid
+  qtsvg, samba, solid, gperf
 }:
 
 mkDerivation {
@@ -16,7 +16,7 @@ mkDerivation {
   buildInputs = [
     exiv2 kactivities karchive kbookmarks kconfig kconfigwidgets kcoreaddons
     kdbusaddons kguiaddons kdnssd kiconthemes ki18n kio khtml kdelibs4support
-    kpty libmtp libssh openexr openslp phonon qtsvg samba solid
+    kpty libmtp libssh openexr openslp phonon qtsvg samba solid gperf
   ];
   CXXFLAGS = [ "-I${ilmbase.dev}/include/OpenEXR" ];
 }