diff --git a/lib/mittsu/core/geometry.rb b/lib/mittsu/core/geometry.rb
index 42d4e263..a1ba747e 100644
--- a/lib/mittsu/core/geometry.rb
+++ b/lib/mittsu/core/geometry.rb
@@ -469,7 +469,7 @@ def to_json
       end
       vertices = []
       @vertices.each do |vert|
-        vertices << vertex.x << vertex.y << vertex.z
+        vertices << vert.x << vert.y << vert.z
       end
       faces = []
       normals = []
@@ -507,7 +507,7 @@ def to_json
           faces << get_uv_index(face_vertex_uvs[2], uvs_hash, uvs)
         end
         if has_face_normal
-          faces << get_normal_index(face.normal)
+          faces << get_normal_index(face.normal, normals_hash, normals)
         end
         if has_face_vertex_normal
           vertex_normals = face.vertex_normals
diff --git a/lib/mittsu/core/object_3d.rb b/lib/mittsu/core/object_3d.rb
index ceadfdc0..fb1a5bdd 100644
--- a/lib/mittsu/core/object_3d.rb
+++ b/lib/mittsu/core/object_3d.rb
@@ -357,7 +357,7 @@ def jsonify
 
       if !self.children.empty?
         data[:children] = @children.map do |child|
-          child.jsonify
+          child.to_json
         end
       end