diff --git a/pkgs/os-specific/bsd/freebsd/pkgs/libbsdxml.nix b/pkgs/os-specific/bsd/freebsd/pkgs/libbsdxml.nix
index 333e4048c837..fe432578d0ca 100644
--- a/pkgs/os-specific/bsd/freebsd/pkgs/libbsdxml.nix
+++ b/pkgs/os-specific/bsd/freebsd/pkgs/libbsdxml.nix
@@ -3,4 +3,8 @@ mkDerivation {
   path = "lib/libexpat";
   extraPaths = [ "contrib/expat" ];
   buildInputs = [ ];
+  outputs = [
+    "out"
+    "debug"
+  ];
 }