diff --git a/pkgs/by-name/ru/rubik/package.nix b/pkgs/by-name/ru/rubik/package.nix
index 67ac23964f55..2cfa62c3b8d5 100644
--- a/pkgs/by-name/ru/rubik/package.nix
+++ b/pkgs/by-name/ru/rubik/package.nix
@@ -46,5 +46,6 @@ stdenvNoCC.mkDerivation {
       glyphs were improved, and glyph set was expanded to GF Cyrillic Plus.
     '';
     platforms = lib.platforms.all;
+    license = lib.licenses.ofl;
   };
 }