diff --git a/nixos/invoke-ddns/default.nix b/nixos/invoke-ddns/default.nix
index 52a35d3..a6f79b9 100644
--- a/nixos/invoke-ddns/default.nix
+++ b/nixos/invoke-ddns/default.nix
@@ -19,7 +19,7 @@
       mkdir -p $out
       tar -xzf $src -C $out
       mv $out/nfsn_ddns-0.2.0/* $out
-      rmdir nfsn_ddns-0.2.0
+      rmdir $out/nfsn_ddns-0.2.0
     '';
 
     installPhase = ''