diff --git a/projects/VC90/SimGear.vcproj b/projects/VC90/SimGear.vcproj
index ab67e848..ccd3c26c 100644
--- a/projects/VC90/SimGear.vcproj
+++ b/projects/VC90/SimGear.vcproj
@@ -1195,6 +1195,14 @@
 				RelativePath="..\..\simgear\scene\material\Effect.hxx"
 				>
 			</File>
+			<File
+				RelativePath="..\..\simgear\scene\material\EffectBuilder.cxx"
+				>
+			</File>
+			<File
+				RelativePath="..\..\simgear\scene\material\EffectBuilder.hxx"
+				>
+			</File>
 			<File
 				RelativePath="..\..\simgear\scene\material\EffectCullVisitor.cxx"
 				>
@@ -1247,6 +1255,14 @@
 				RelativePath="..\..\simgear\scene\material\matmodel.hxx"
 				>
 			</File>
+			<File
+				RelativePath="..\..\simgear\scene\material\Noise.cxx"
+				>
+			</File>
+			<File
+				RelativePath="..\..\simgear\scene\material\Noise.hxx"
+				>
+			</File>
 			<File
 				RelativePath="..\..\simgear\scene\material\Pass.cxx"
 				>
@@ -1263,6 +1279,14 @@
 				RelativePath="..\..\simgear\scene\material\Technique.hxx"
 				>
 			</File>
+			<File
+				RelativePath="..\..\simgear\scene\material\TextureBuilder.cxx"
+				>
+			</File>
+			<File
+				RelativePath="..\..\simgear\scene\material\TextureBuilder.hxx"
+				>
+			</File>
 		</Filter>
 		<Filter
 			Name="Lib_sgtgdb"
diff --git a/simgear/scene/material/EffectBuilder.cxx b/simgear/scene/material/EffectBuilder.cxx
index b1f09207..32168a9c 100644
--- a/simgear/scene/material/EffectBuilder.cxx
+++ b/simgear/scene/material/EffectBuilder.cxx
@@ -1,3 +1,9 @@
+#ifdef HAVE_CONFIG_H
+#  include <simgear_config.h>
+#endif
+
+#include <simgear/math/SGMath.hxx>
+
 #include "EffectBuilder.hxx"
 #include "Effect.hxx"
 
diff --git a/simgear/scene/material/TextureBuilder.cxx b/simgear/scene/material/TextureBuilder.cxx
index 2ea23c6e..a6490c92 100644
--- a/simgear/scene/material/TextureBuilder.cxx
+++ b/simgear/scene/material/TextureBuilder.cxx
@@ -14,6 +14,10 @@
 // along with this program; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
+#ifdef HAVE_CONFIG_H
+#  include <simgear_config.h>
+#endif
+
 #include "TextureBuilder.hxx"
 
 #include <osg/Texture1D>
@@ -28,6 +32,8 @@
 #include <simgear/scene/util/SGSceneFeatures.hxx>
 #include <simgear/scene/util/StateAttributeFactory.hxx>
 
+#include <simgear/math/SGMath.hxx>
+
 #include "Noise.hxx"
 
 namespace simgear