diff --git a/core/math/geometry.cpp b/core/math/geometry.cpp
index 80f1dec..a8ccda4 100644
--- a/core/math/geometry.cpp
+++ b/core/math/geometry.cpp
@@ -36,7 +36,7 @@
 #include "core/thirdparty/misc/clipper.hpp"
 #include "core/thirdparty/misc/triangulator.h"
 #define STB_RECT_PACK_IMPLEMENTATION
-#include "thirdparty/stb_rect_pack/stb_rect_pack.h"
+#include "core/thirdparty/stb_rect_pack/stb_rect_pack.h"
 
 #define SCALE_FACTOR 100000.0 // Based on CMP_EPSILON.
 
diff --git a/thirdparty/stb_rect_pack/stb_rect_pack.h b/core/thirdparty/stb_rect_pack/stb_rect_pack.h
similarity index 100%
rename from thirdparty/stb_rect_pack/stb_rect_pack.h
rename to core/thirdparty/stb_rect_pack/stb_rect_pack.h