diff --git a/ci.nix b/ci.nix
index 267ed37ca8..6718eb01d2 100644
--- a/ci.nix
+++ b/ci.nix
@@ -1,6 +1,6 @@
 # 'supportedSystems' restricts the set of systems that we will evaluate for. Useful when you're evaluating
 # on a machine with e.g. no way to build the Darwin IFDs you need!
-{ ifdLevel ? 3
+{ ifdLevel ? 1
 , checkMaterialization ? false
 , system ? builtins.currentSystem
 , evalSystem ? builtins.currentSystem or "x86_64-linux"