diff --git a/examples/common/cube_atlas.cpp b/examples/common/cube_atlas.cpp
index 7b83f6f75..9407363a3 100644
--- a/examples/common/cube_atlas.cpp
+++ b/examples/common/cube_atlas.cpp
@@ -149,6 +149,7 @@ bool RectanglePacker::addRectangle(uint16_t _width, uint16_t _height, uint16_t&
 			{
 				m_skyline.erase(m_skyline.begin() + ii);
 				--ii;
+				--num;
 			}
 			else
 			{