diff --git a/lib/cyberarm_engine/common.rb b/lib/cyberarm_engine/common.rb
index ca3dece..2e6ec33 100644
--- a/lib/cyberarm_engine/common.rb
+++ b/lib/cyberarm_engine/common.rb
@@ -28,8 +28,8 @@ module CyberarmEngine
       window.show_cursor = boolean
     end
 
-    def draw_rect(x, y, width, height, color, z = 0)
-      Gosu.draw_rect(x, y, width, height, color, z)
+    def draw_rect(x, y, width, height, color, z = 0, mode = :default)
+      Gosu.draw_rect(x, y, width, height, color, z, mode)
     end
 
     def fill(color, z = 0)
diff --git a/lib/cyberarm_engine/opengl/perspective_camera.rb b/lib/cyberarm_engine/opengl/perspective_camera.rb
index 1eb7fff..f4f571f 100644
--- a/lib/cyberarm_engine/opengl/perspective_camera.rb
+++ b/lib/cyberarm_engine/opengl/perspective_camera.rb
@@ -3,8 +3,8 @@ module CyberarmEngine
     attr_accessor :position, :orientation, :aspect_ratio, :field_of_view,
                   :min_view_distance, :max_view_distance
 
-    def initialize(position:, aspect_ratio:, orientation: Vector.new(0, 0,
-                                                                     0), field_of_view: 70.0, min_view_distance: 0.1, max_view_distance: 155.0)
+    def initialize(position:, aspect_ratio:, orientation: Vector.new(0, 0, 0),
+                   field_of_view: 70.0, min_view_distance: 0.1, max_view_distance: 1024.0)
       @position = position
       @orientation = orientation