diff --git a/config/c3d2.nix b/config/c3d2.nix
index 81f0e808..c8b531ec 100644
--- a/config/c3d2.nix
+++ b/config/c3d2.nix
@@ -140,7 +140,6 @@ in {
 
     nix = {
       autoOptimiseStore = true;
-      extraOptions = "experimental-features = nix-command flakes";
       gc = {
         automatic = true;
         dates = "06:00";
@@ -158,6 +157,7 @@ in {
         };
       };
       extraOptions = ''
+        experimental-features = nix-command flakes
         builders-use-substitutes = true
       '';
     };