diff --git a/machines/_base.nix b/machines/_base.nix
index 36c087b..555666e 100644
--- a/machines/_base.nix
+++ b/machines/_base.nix
@@ -58,9 +58,9 @@ in {
       #        options = "--delete-older-than 30d";
       #      };
 
-      # to free up to 100GiB whenever there is less than 10GiB left
+      # to free up to 100GiB whenever there is less than 1GiB left
       extraOptions = ''
-        min-free = ${toString (1024 * 1024 * 1024 * 10)}
+        min-free = ${toString (1024 * 1024 * 1024 * 1)}
         max-free = ${toString (1024 * 1024 * 1024 * 100)}
       '';
     };