diff --git a/src/nvtt/OptimalCompressDXT.cpp b/src/nvtt/OptimalCompressDXT.cpp
index d8b0ba0..3953831 100644
--- a/src/nvtt/OptimalCompressDXT.cpp
+++ b/src/nvtt/OptimalCompressDXT.cpp
@@ -21,16 +21,17 @@
 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 // OTHER DEALINGS IN THE SOFTWARE.
 
-#include <nvcore/Containers.h> // swap
-
-#include <nvmath/Color.h>
+#include "OptimalCompressDXT.h"
+#include "SingleColorLookup.h"
 
 #include <nvimage/ColorBlock.h>
 #include <nvimage/BlockDXT.h>
 
-#include "OptimalCompressDXT.h"
-#include "SingleColorLookup.h"
+#include <nvmath/Color.h>
 
+#include <nvcore/Containers.h> // swap
+
+#include <limits.h>
 
 using namespace nv;
 using namespace OptimalCompress;
diff --git a/src/nvtt/OptimalCompressDXT.h b/src/nvtt/OptimalCompressDXT.h
index 77ba4c9..f315082 100644
--- a/src/nvtt/OptimalCompressDXT.h
+++ b/src/nvtt/OptimalCompressDXT.h
@@ -26,6 +26,8 @@
 
 #include <nvimage/nvimage.h>
 
+#include <nvmath/Color.h>
+
 namespace nv
 {
 	struct ColorBlock;