diff --git a/LICENSE b/LICENSE
index 135927746d..eb43828b99 100644
--- a/LICENSE
+++ b/LICENSE
@@ -27,3 +27,23 @@
 
 * Icon themes are licensed under Creative Commons by-sa 3.0 or 4.0. See
   the 'COPYING' files in icons/Symbolic and icons/Color respectively.
+
+* Any data used in artworks, such as brushes, patterns and the like, and more
+  broadly likely all data inside the data/ folder should be under a CC0 license
+  (Creative Commons Zero) or equivalent, i.e. "No rights Reserved", because GIMP
+  contributors clearly don't intend to claim any right on anyone's work just
+  because they used GIMP and its default data.
+  We cannot clearly give proper licensing on all existing data, prior to the
+  addition of this note in the LICENSE file (for historical reasons, simply
+  because their contributors are since long gone), though we can say that an
+  uncountable number of users have used these for dozens of years and never had
+  legal problems as far as we know (it is anyway unclear whether anyone could
+  really claim any right for very basic brush or pattern usage). Since 2015, we
+  even have a clear FAQ entry to explicitly say the GIMP project has no
+  intention whatsoever to put restrictions on people's work:
+  https://www.gimp.org/docs/userfaq.html#can-i-use-gimp-commercially
+
+  Therefore any new data file under the data/ folder will be expected to be CC0.
+  All contributors are expected to read the LICENSE file and therefore are
+  implicitly agreeing to license their data under CC0 by contributing it as core
+  GIMP data.