diff --git a/components/nifosg/nifloader.cpp b/components/nifosg/nifloader.cpp
index 3007bc6cf2..8ed17f3901 100644
--- a/components/nifosg/nifloader.cpp
+++ b/components/nifosg/nifloader.cpp
@@ -517,13 +517,6 @@ namespace NifOsg
             if (!node)
                 node = new NifOsg::MatrixTransform(nifNode->trafo);
 
-            if (nifNode->recType == Nif::RC_NiCollisionSwitch && !(nifNode->flags & Nif::NiNode::Flag_ActiveCollision))
-            {
-                node->setNodeMask(Loader::getIntersectionDisabledNodeMask());
-                // This node must not be combined with another node.
-                dataVariance = osg::Object::DYNAMIC;
-            }
-
             node->setDataVariance(dataVariance);
 
             return node;
@@ -639,6 +632,9 @@ namespace NifOsg
                 node->setNodeMask(Loader::getHiddenNodeMask());
             }
 
+            if (nifNode->recType == Nif::RC_NiCollisionSwitch && !(nifNode->flags & Nif::NiNode::Flag_ActiveCollision))
+                node->setNodeMask(Loader::getIntersectionDisabledNodeMask());
+
             osg::ref_ptr<SceneUtil::CompositeStateSetUpdater> composite = new SceneUtil::CompositeStateSetUpdater;
 
             applyNodeProperties(nifNode, node, composite, imageManager, boundTextures, animflags);
diff --git a/components/sceneutil/optimizer.cpp b/components/sceneutil/optimizer.cpp
index 748ceee952..ae0985d57c 100644
--- a/components/sceneutil/optimizer.cpp
+++ b/components/sceneutil/optimizer.cpp
@@ -1935,8 +1935,8 @@ bool Optimizer::MergeGroupsVisitor::isOperationPermissible(osg::Group& node)
     return !node.getCullCallback() &&
            !node.getEventCallback() &&
            !node.getUpdateCallback() &&
-            isOperationPermissibleForObject(&node) &&
-           typeid(node)==typeid(osg::Group);
+           typeid(node)==typeid(osg::Group) &&
+            isOperationPermissibleForObject(&node);
 }
 
 void Optimizer::MergeGroupsVisitor::apply(osg::LOD &lod)