diff --git a/pcbnew/swig/board.i b/pcbnew/swig/board.i
index fcb3fea83b..81e2141b91 100644
--- a/pcbnew/swig/board.i
+++ b/pcbnew/swig/board.i
@@ -69,6 +69,11 @@ HANDLE_EXCEPTIONS(BOARD::TracksInNetBetweenPoints)
 // Do not permit default BOARD ctor since it won't initialize the project
 %ignore BOARD::BOARD();
 
+// Do not wrap internal-only structures
+%ignore BOARD::m_InsideCourtyardCache;
+%ignore BOARD::m_InsideAreaCache;
+%ignore BOARD::m_CopperZoneRTrees;
+
 %include board.h
 %{
 #include <board.h>