diff --git a/nixos/modules/config/fonts/fontconfig.nix b/nixos/modules/config/fonts/fontconfig.nix
index 846430194716..2c6a21828764 100644
--- a/nixos/modules/config/fonts/fontconfig.nix
+++ b/nixos/modules/config/fonts/fontconfig.nix
@@ -204,8 +204,10 @@ let
     ln -s ${renderConf}       $dst/10-nixos-rendering.conf
 
     # 50-user.conf
-    ${optionalString (!cfg.includeUserConf) ''
-    rm $dst/50-user.conf
+    # Since latest fontconfig looks for default files inside the package,
+    # we had to move this one elsewhere to be able to exclude it here.
+    ${optionalString cfg.includeUserConf ''
+    ln -s ${pkg.out}/etc/fonts/conf.d.bak/50-user.conf $dst/50-user.conf
     ''}
 
     # local.conf (indirect priority 51)