diff --git a/lib/libfnd/fnd.vcxproj b/lib/libfnd/fnd.vcxproj
index b74a6d7..5e250b2 100644
--- a/lib/libfnd/fnd.vcxproj
+++ b/lib/libfnd/fnd.vcxproj
@@ -120,7 +120,9 @@
     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>
+    <ClInclude Include="include\fnd\BitMath.h" />
     <ClInclude Include="include\fnd\elf.h" />
+    <ClInclude Include="include\fnd\Endian.h" />
     <ClInclude Include="include\fnd\Exception.h" />
     <ClInclude Include="include\fnd\io.h" />
     <ClInclude Include="include\fnd\ISerialiseableBinary.h" />
diff --git a/lib/libfnd/fnd.vcxproj.filters b/lib/libfnd/fnd.vcxproj.filters
index 3d1dee6..29a6b87 100644
--- a/lib/libfnd/fnd.vcxproj.filters
+++ b/lib/libfnd/fnd.vcxproj.filters
@@ -39,6 +39,12 @@
     <ClInclude Include="include\fnd\types.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="include\fnd\BitMath.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="include\fnd\Endian.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="source\Exception.cpp">
diff --git a/lib/libfnd/include/fnd/BitMath.h b/lib/libfnd/include/fnd/BitMath.h
index 368dd9a..f3a4ceb 100644
--- a/lib/libfnd/include/fnd/BitMath.h
+++ b/lib/libfnd/include/fnd/BitMath.h
@@ -11,4 +11,4 @@ This is a 0x40 byte header to prepend to raw EXEFS .code binaries that provide e
 
 // Bit math macros
 #define _BIT(n) BIT(n)
-#define _HAS_BIT(val, bit) ((val) & _BIT(bit) != 0)
+#define _HAS_BIT(val, bit) (((val) & _BIT(bit)) != 0)