diff --git a/nixos/modules/profiles/installation-device.nix b/nixos/modules/profiles/installation-device.nix
index 0b10c0414147..913b6fc204dd 100644
--- a/nixos/modules/profiles/installation-device.nix
+++ b/nixos/modules/profiles/installation-device.nix
@@ -126,5 +126,15 @@ with lib;
 
     # allow nix-copy to live system
     nix.settings.trusted-users = [ "root" "nixos" ];
+
+    # Install less voices for speechd to save some space
+    services.speechd.package = pkgs.speechd.override {
+      mbrola = pkgs.mbrola.override {
+        mbrola-voices = pkgs.mbrola-voices.override {
+          # only ship with one voice per language
+          languages = [ "*1" ];
+        };
+      };
+    };
   };
 }