diff --git a/pkgs/by-name/ar/ardour_8/package.nix b/pkgs/by-name/ar/ardour_8/package.nix
index e21a47802dcd..aa870cdd312d 100644
--- a/pkgs/by-name/ar/ardour_8/package.nix
+++ b/pkgs/by-name/ar/ardour_8/package.nix
@@ -216,7 +216,7 @@ stdenv.mkDerivation (
         }"
     '';
 
-    LINKFLAGS = "-lpthread";
+    env.LINKFLAGS = "-lpthread";
 
     meta = {
       description = "Multi-track hard disk recording software";