diff --git a/nixos/modules/system/etc/etc.nix b/nixos/modules/system/etc/etc.nix
index cfb9c39458e..ea61e7384e6 100644
--- a/nixos/modules/system/etc/etc.nix
+++ b/nixos/modules/system/etc/etc.nix
@@ -173,7 +173,7 @@ in
           config = {
             target = mkDefault name;
             source = mkIf (config.text != null) (
-              let name' = "etc-" + baseNameOf name;
+              let name' = "etc-" + lib.replaceStrings ["/"] ["-"] name;
               in mkDerivedConfig options.text (pkgs.writeText name')
             );
           };