Convert Catalogue to a Collection

[r2c2.git] / source / libr2c2 / terraintype.h

diff --git a/source/libr2c2/terraintype.h b/source/libr2c2/terraintype.h
index f0013ad425cfe4241ef6d6ed2edfc9482b2c0dfa..8bd59eaf8605d6347739a19543a0b5ac2c4f9c2b 100644 (file)
--- a/source/libr2c2/terraintype.h
+++ b/source/libr2c2/terraintype.h
@@ -37,7 +37,7 @@ private:
        float elevation_granularity;
 
 public:
-       TerrainType(const ArticleNumber &);
+       TerrainType(const ArticleNumber & = ArticleNumber());
 
        unsigned get_n_surface_types() const { return surface_types.size(); }
        const SurfaceType &get_surface_type(unsigned) const;