diff --git a/SwarselSystems.org b/SwarselSystems.org
index 1b22c93..8a362b4 100644
--- a/SwarselSystems.org
+++ b/SwarselSystems.org
@@ -8948,8 +8948,8 @@ nix-index provides a way to find out which packages are provided by which deriva
           mkdir -p $out/etc/profile.d
           substitute ${self + /scripts/command-not-found.sh}        \
             $out/etc/profile.d/command-not-found.sh                 \
-            --replace @nix-locate@ ${pkgs.nix-index}/bin/nix-locate \
-            --replace @tput@ ${pkgs.ncurses}/bin/tput
+            --replace-fail @nix-locate@ ${pkgs.nix-index}/bin/nix-locate \
+            --replace-fail @tput@ ${pkgs.ncurses}/bin/tput
         '';
       in
 
diff --git a/profiles/home/common/nix-index.nix b/profiles/home/common/nix-index.nix
index b9a4370..a5efaf6 100644
--- a/profiles/home/common/nix-index.nix
+++ b/profiles/home/common/nix-index.nix
@@ -6,8 +6,8 @@
         mkdir -p $out/etc/profile.d
         substitute ${self + /scripts/command-not-found.sh}        \
           $out/etc/profile.d/command-not-found.sh                 \
-          --replace @nix-locate@ ${pkgs.nix-index}/bin/nix-locate \
-          --replace @tput@ ${pkgs.ncurses}/bin/tput
+          --replace-fail @nix-locate@ ${pkgs.nix-index}/bin/nix-locate \
+          --replace-fail @tput@ ${pkgs.ncurses}/bin/tput
       '';
     in