diff --git a/projects/VC90/SimGear.vcproj b/projects/VC90/SimGear.vcproj
index 24678e83..34aa5752 100644
--- a/projects/VC90/SimGear.vcproj
+++ b/projects/VC90/SimGear.vcproj
@@ -463,8 +463,6 @@
 				RelativePath="..\..\simgear\io\raw_socket.hxx"
 				>
 			</File>
-			<File RelativePath="..\..\simgear\io\HostLookup.cxx"></File>
-			<File RelativePath="..\..\simgear\io\HostLookup.hxx"></File>
 			<File
 				RelativePath="..\..\simgear\io\sg_binobj.cxx"
 				>
@@ -1465,7 +1463,7 @@
 				RelativePath="..\..\simgear\scene\tgdb\userdata.hxx"
 				>
 			</File>
-		</Filter>
+		</Filter>
 		<Filter
 			Name="Lib_sgtsync"
 			>
diff --git a/simgear/io/raw_socket.hxx b/simgear/io/raw_socket.hxx
index e3f50daf..1af74ce0 100644
--- a/simgear/io/raw_socket.hxx
+++ b/simgear/io/raw_socket.hxx
@@ -24,7 +24,10 @@
 #define SG_IO_SOCKET_HXX
 
 #include <errno.h>
-#include <netinet/in.h>
+
+#if defined(__APPLE__) || defined(__FreeBSD__)
+#  include <netinet/in.h>
+#endif
 
 namespace simgear
 {