diff --git a/nixos/modules/services/printing/cupsd.nix b/nixos/modules/services/printing/cupsd.nix
index 0fe25b66da08..ba288a5d0611 100644
--- a/nixos/modules/services/printing/cupsd.nix
+++ b/nixos/modules/services/printing/cupsd.nix
@@ -11,21 +11,21 @@ let
   additionalBackends = pkgs.runCommand "additional-cups-backends" { }
     ''
       mkdir -p $out
-      if [ ! -e ${cups}/lib/cups/backend/smb ]; then
+      if [ ! -e ${cups.out}/lib/cups/backend/smb ]; then
         mkdir -p $out/lib/cups/backend
         ln -sv ${pkgs.samba}/bin/smbspool $out/lib/cups/backend/smb
       fi
 
       # Provide support for printing via HTTPS.
-      if [ ! -e ${cups}/lib/cups/backend/https ]; then
+      if [ ! -e ${cups.out}/lib/cups/backend/https ]; then
         mkdir -p $out/lib/cups/backend
-        ln -sv ${cups}/lib/cups/backend/ipp $out/lib/cups/backend/https
+        ln -sv ${cups.out}/lib/cups/backend/ipp $out/lib/cups/backend/https
       fi
     '';
 
   # Here we can enable additional backends, filters, etc. that are not
   # part of CUPS itself, e.g. the SMB backend is part of Samba.  Since
-  # we can't update ${cups}/lib/cups itself, we create a symlink tree
+  # we can't update ${cups.out}/lib/cups itself, we create a symlink tree
   # here and add the additional programs.  The ServerBin directive in
   # cupsd.conf tells cupsd to use this tree.
   bindir = pkgs.buildEnv {
diff --git a/pkgs/applications/networking/browsers/opera/default.nix b/pkgs/applications/networking/browsers/opera/default.nix
index ab199ff97cdf..de7240d3a83b 100644
--- a/pkgs/applications/networking/browsers/opera/default.nix
+++ b/pkgs/applications/networking/browsers/opera/default.nix
@@ -73,7 +73,7 @@ stdenv.mkDerivation rec {
 
   postFixup = ''
     oldRPATH=`patchelf --print-rpath $out/lib/opera/opera`
-    patchelf --set-rpath $oldRPATH:${cups}/lib $out/lib/opera/opera
+    patchelf --set-rpath $oldRPATH:${cups.out}/lib $out/lib/opera/opera
 
     # This file should normally require a gtk-update-icon-cache -q /usr/share/icons/hicolor command
     # It have no reasons to exist in a redistribuable package