diff --git a/nix/base.nix b/nix/base.nix
index 71bef93..464dc1e 100644
--- a/nix/base.nix
+++ b/nix/base.nix
@@ -35,7 +35,7 @@ main = xmonad defaultConfig
 
 startup :: X ()
 startup = do
-  spawn "spice-vdagent"
+  spawn "${pkgs.spice-vdagent}/bin/spice-vdagent"
   '';
 
   environment.systemPackages = [ pkgs.bc ];