diff --git a/nixos/modules/services/x11/hardware/synaptics.nix b/nixos/modules/services/x11/hardware/synaptics.nix
index 2981e7545e8..e74b19c8e71 100644
--- a/nixos/modules/services/x11/hardware/synaptics.nix
+++ b/nixos/modules/services/x11/hardware/synaptics.nix
@@ -169,10 +169,10 @@ in {
 
   config = mkIf cfg.enable {
 
-    services.xserver.modules = [ pkg ];
+    services.xserver.modules = [ pkg.out ];
 
     environment.etc."${etcFile}".source =
-      "${pkg}/share/X11/xorg.conf.d/50-synaptics.conf";
+      "${pkg.out}/share/X11/xorg.conf.d/50-synaptics.conf";
 
     environment.systemPackages = [ pkg ];
 
diff --git a/pkgs/servers/x11/xorg/overrides.nix b/pkgs/servers/x11/xorg/overrides.nix
index a19f479bf2e..74d95259163 100644
--- a/pkgs/servers/x11/xorg/overrides.nix
+++ b/pkgs/servers/x11/xorg/overrides.nix
@@ -305,6 +305,7 @@ in
   };
 
   xf86inputsynaptics = attrs: attrs // {
+    outputs = [ "dev" "out" ]; # *.pc pulls xorgserver.dev
     buildInputs = attrs.buildInputs ++ [args.mtdev args.libevdev];
     installFlags = "sdkdir=\${out}/include/xorg configdir=\${out}/share/X11/xorg.conf.d";
   };