diff --git a/artiq-fast/default.nix b/artiq-fast/default.nix
index 50b9384..4e7f744 100644
--- a/artiq-fast/default.nix
+++ b/artiq-fast/default.nix
@@ -107,7 +107,7 @@ let
     conda-windows-llvm-or1k = import ./conda-windows/llvm-or1k.nix {
       inherit pkgs;
       inherit (mainPackages.llvm-or1k) version;
-      src = llvm-or1k.llvm-src;
+      src = mainPackages.llvm-or1k.llvm-src;
     };
     conda-windows-llvmlite-artiq = import ./conda-windows/llvmlite-artiq.nix {
       inherit pkgs conda-windows-llvm-or1k;