diff --git a/systems/ful/opencrow.nix b/systems/ful/opencrow.nix
index c6b4e49..98ce1d5 100644
--- a/systems/ful/opencrow.nix
+++ b/systems/ful/opencrow.nix
@@ -27,6 +27,7 @@
     enable = true;
 
     package = pkgs.opencrow;
+    piPackage = pkgs.pi;
 
     extraPackages = [
       pkgs.pi