diff --git a/pkgs/tools/misc/fondu/default.nix b/pkgs/tools/misc/fondu/default.nix
index 7610bb88f390..e31da3bfd212 100644
--- a/pkgs/tools/misc/fondu/default.nix
+++ b/pkgs/tools/misc/fondu/default.nix
@@ -15,5 +15,6 @@ stdenv.mkDerivation rec {
 
   meta = {
     platforms = stdenv.lib.platforms.unix;
+    license = stdenv.lib.licenses.gpl3;
   };
 }