diff --git a/pkgs/applications/editors/emacs/elisp-packages/manual-packages/notdeft/default.nix b/pkgs/applications/editors/emacs/elisp-packages/manual-packages/notdeft/default.nix
index f3341c56f69c..c1735a3bd74f 100644
--- a/pkgs/applications/editors/emacs/elisp-packages/manual-packages/notdeft/default.nix
+++ b/pkgs/applications/editors/emacs/elisp-packages/manual-packages/notdeft/default.nix
@@ -65,6 +65,7 @@ melpaBuild {
     homepage = "https://tero.hasu.is/notdeft/";
     description = "Fork of Deft that uses Xapian as a search engine";
     maintainers = [ lib.maintainers.nessdoor ];
+    license = lib.licenses.bsd3;
     platforms = lib.platforms.linux;
   };
 }