diff --git a/pkgs/os-specific/linux/wpa_supplicant/default.nix b/pkgs/os-specific/linux/wpa_supplicant/default.nix
index 26e3e8cc2b2..5ee25ea976a 100644
--- a/pkgs/os-specific/linux/wpa_supplicant/default.nix
+++ b/pkgs/os-specific/linux/wpa_supplicant/default.nix
@@ -48,14 +48,14 @@ stdenv.mkDerivation rec {
 
   postInstall = ''
     mkdir -p $out/share/man/man5 $out/share/man/man8
-    cp -v doc/docbook/*.5 $out/share/man/man5/
-    cp -v doc/docbook/*.8 $out/share/man/man8/
+    cp -v "doc/docbook/"*.5 $out/share/man/man5/
+    cp -v "doc/docbook/"*.8 $out/share/man/man8/
     mkdir -p $out/etc/dbus-1/system.d $out/share/dbus-1/system-services $out/etc/systemd/system
-    cp -v dbus/*service $out/share/dbus-1/system-services
-    sed -e "s@/sbin/wpa_supplicant@$out&@" -i $out/share/dbus-1/system-services/*
+    cp -v "dbus/"*service $out/share/dbus-1/system-services
+    sed -e "s@/sbin/wpa_supplicant@$out&@" -i "$out/share/dbus-1/system-services/"*
     cp -v dbus/dbus-wpa_supplicant.conf $out/etc/dbus-1/system.d
-    cp -v systemd/*.service $out/etc/systemd/system
-  ''; # */
+    cp -v "systemd/"*.service $out/etc/systemd/system
+  '';
 
   meta = {
     homepage = http://hostap.epitest.fi/wpa_supplicant/;