diff --git a/library/PolyVoxCore/include/ConstVolumeProxy.h b/library/PolyVoxCore/include/ConstVolumeProxy.h
index b571d462..e96e6d59 100644
--- a/library/PolyVoxCore/include/ConstVolumeProxy.h
+++ b/library/PolyVoxCore/include/ConstVolumeProxy.h
@@ -25,6 +25,7 @@ freely, subject to the following restrictions:
 #define __PolyVox_ConstVolumeProxy_H__
 
 #include "PolyVoxForwardDeclarations.h"
+#include "Region.h"
 
 namespace PolyVox
 {
diff --git a/library/PolyVoxCore/include/Volume.h b/library/PolyVoxCore/include/Volume.h
index 1aeabb14..c3e72979 100644
--- a/library/PolyVoxCore/include/Volume.h
+++ b/library/PolyVoxCore/include/Volume.h
@@ -25,6 +25,7 @@ freely, subject to the following restrictions:
 #define __PolyVox_Volume_H__
 
 #include "PolyVoxImpl/Block.h"
+#include "Region.h"
 #include "PolyVoxForwardDeclarations.h"
 
 #include <limits>
diff --git a/library/PolyVoxCore/source/Region.cpp b/library/PolyVoxCore/source/Region.cpp
index d76ed9b0..d1155957 100644
--- a/library/PolyVoxCore/source/Region.cpp
+++ b/library/PolyVoxCore/source/Region.cpp
@@ -23,6 +23,8 @@ freely, subject to the following restrictions:
 
 #include "Region.h"
 
+#include <limits>
+
 namespace PolyVox
 {
 	const Region Region::MaxRegion