diff --git a/src/osgUtil/Simplifier.cpp b/src/osgUtil/Simplifier.cpp
index 963275ab0..1ee11d5a9 100644
--- a/src/osgUtil/Simplifier.cpp
+++ b/src/osgUtil/Simplifier.cpp
@@ -1040,11 +1040,11 @@ struct CollectTriangleOperator
 
 EdgeCollapse::~EdgeCollapse()
 {
-    for_each(_edgeSet.begin(),_edgeSet.end(),dereference_clear());
+	std::for_each(_edgeSet.begin(),_edgeSet.end(),dereference_clear());
 
-    for_each(_triangleSet.begin(),_triangleSet.end(),dereference_clear());
-    for_each(_pointSet.begin(),_pointSet.end(),dereference_clear());
-    for_each(_originalPointList.begin(),_originalPointList.end(),dereference_clear());
+	std::for_each(_triangleSet.begin(),_triangleSet.end(),dereference_clear());
+	std::for_each(_pointSet.begin(),_pointSet.end(),dereference_clear());
+	std::for_each(_originalPointList.begin(),_originalPointList.end(),dereference_clear());
 }