diff --git a/src/osg/Switch.cpp b/src/osg/Switch.cpp
index e7c89cb95..617b1229e 100644
--- a/src/osg/Switch.cpp
+++ b/src/osg/Switch.cpp
@@ -163,6 +163,7 @@ bool Switch::setAllChildrenOn()
     {
         *itr = true;
     }
+    dirtyBound();
     return true;
 }