diff --git a/pkgs/development/libraries/openbabel/default.nix b/pkgs/development/libraries/openbabel/default.nix
index 61024a33113..bfbf6f1212f 100644
--- a/pkgs/development/libraries/openbabel/default.nix
+++ b/pkgs/development/libraries/openbabel/default.nix
@@ -19,5 +19,6 @@ stdenv.mkDerivation rec {
   meta = {
     platforms = stdenv.lib.platforms.all;
     maintainers = [ ];
+    license = stdenv.lib.licenses.gpl2Plus;
   };
 }