X-Git-Url: http://nitlanguage.org

diff --git a/lib/ai/examples/puzzle.nit b/lib/ai/examples/puzzle.nit
index 0583035..400af03 100644
--- a/lib/ai/examples/puzzle.nit
+++ b/lib/ai/examples/puzzle.nit
@@ -41,6 +41,8 @@
 #
 # The shortest plan, in two steps, is to move *up* the tile under the hole (e),
 # then to move *left* the tile after the hole (h).
+module puzzle is example
+
 import ai::search
 
 # The state (`S`) is a square grid, modeled as a one-dimensional array of Tile.