diff --git a/VisualStudio/VisualStudio.dsw b/VisualStudio/VisualStudio.dsw
index 28fe032f4..a1a9e256b 100644
--- a/VisualStudio/VisualStudio.dsw
+++ b/VisualStudio/VisualStudio.dsw
@@ -348,6 +348,9 @@ Package=<4>
     Project_Dep_Name Core osgProducer
     End Project Dependency
     Begin Project Dependency
+    Project_Dep_Name Core osgSim
+    End Project Dependency
+    Begin Project Dependency
     Project_Dep_Name Core osgUtil
     End Project Dependency
 }}}
diff --git a/src/osgSim/SphereSegment.cpp b/src/osgSim/SphereSegment.cpp
index 6f0252b80..db1b22b77 100644
--- a/src/osgSim/SphereSegment.cpp
+++ b/src/osgSim/SphereSegment.cpp
@@ -1158,7 +1158,7 @@ struct TriangleIntersectOperator
         _numInside(0),
         _numIntersecting(0) {}
 
-    class Triangle;
+    struct Triangle;
 
     struct Edge : public osg::Referenced
     {
@@ -1524,7 +1524,7 @@ struct TriangleIntersectOperator
             
             double rad2 = vertex.length2();
             double length_xy = sqrtf(vertex.x()*vertex.x() + vertex.y()*vertex.y());        
-            double elevation = atan2(vertex.z(),length_xy);
+            double elevation = atan2((double)vertex.z(),length_xy);
             double azim = atan2(vertex.x(),vertex.y());
             if (azim<0.0) azim += 2.0*osg::PI;