diff --git a/core/tabs/applications-setup/docker-setup.sh b/core/tabs/applications-setup/docker-setup.sh
index 845f62d5..4588a1d8 100755
--- a/core/tabs/applications-setup/docker-setup.sh
+++ b/core/tabs/applications-setup/docker-setup.sh
@@ -37,7 +37,7 @@ install_docker() {
             ;;
         nix-env)
             "$PACKAGER" -iA nixpkgs.docker
-            "$ESCALATION_TOOL" sed -i -E '/^[[:space:]]*virtualisation\.docker\.enable/!b; s/^([[:space:]]*)virtualisation\.docker\.enable.*/\1virtualisation.docker.enable = true;/' "$NIXOS_CONFIG" || echo 'virtualisation.docker.enable = true;' | "$ESCALATION_TOOL" tee -a "$NIXOS_CONFIG"
+            "$ESCALATION_TOOL" sed -i'' -E '/^[[:space:]]*virtualisation\.docker\.enable/!b; s/^([[:space:]]*)virtualisation\.docker\.enable.*/\1virtualisation.docker.enable = true;/' "$NIXOS_CONFIG" || echo 'virtualisation.docker.enable = true;' | "$ESCALATION_TOOL" tee -a "$NIXOS_CONFIG"
             "$ESCALATION_TOOL" nixos-rebuild switch
             ;;
         *)
diff --git a/core/tabs/applications-setup/setup-flatpak.sh b/core/tabs/applications-setup/setup-flatpak.sh
index 1ef4a279..6eee92e3 100755
--- a/core/tabs/applications-setup/setup-flatpak.sh
+++ b/core/tabs/applications-setup/setup-flatpak.sh
@@ -27,7 +27,7 @@ setup_flatpak() {
                 ;;
             nix-env)
                 "$PACKAGER" -iA nixpkgs.flatpak
-                "$ESCALATION_TOOL" sed -i -E '/^[[:space:]]*services\.flatpak\.enable/!b; s/^([[:space:]]*)services\.flatpak\.enable.*/\1services.flatpak.enable = true;/' "$NIXOS_CONFIG" || echo 'services.flatpak.enable = true;' | "$ESCALATION_TOOL" tee -a "$NIXOS_CONFIG"
+                "$ESCALATION_TOOL" sed -i'' -E '/^[[:space:]]*services\.flatpak\.enable/!b; s/^([[:space:]]*)services\.flatpak\.enable.*/\1services.flatpak.enable = true;/' "$NIXOS_CONFIG" || echo 'services.flatpak.enable = true;' | "$ESCALATION_TOOL" tee -a "$NIXOS_CONFIG"
                 "$ESCALATION_TOOL" nixos-rebuild switch
                 ;;
             *)