diff --git a/source/application.cpp b/source/application.cpp
index 0a04417..7dd050f 100644
--- a/source/application.cpp
+++ b/source/application.cpp
@@ -1966,6 +1966,8 @@ namespace gmtk
 			gl::ClearColor(1.f, 1.f, 1.f, 1.f);
 			gl::Clear(gl::COLOR_BUFFER_BIT);
 
+			gl::Viewport(0, 0, screen_size_[0], screen_size_[1]);
+
 			float view_level = view_stack_.back().level;
 			float pixel_size = view_box_[1].length() / screen_size_[1];