diff --git a/math/mathcore/src/TKDTree.cxx b/math/mathcore/src/TKDTree.cxx
index 3474a04cf93d2..15ecbf9bfe635 100644
--- a/math/mathcore/src/TKDTree.cxx
+++ b/math/mathcore/src/TKDTree.cxx
@@ -793,13 +793,13 @@ void TKDTree<Index, Value>::UpdateRange(Index inode, Value* point, Value range,
       }
       return;
    }
-   if (point[fAxis[inode]]<=fValue[inode]){
+   if (point[fAxis[inode]]<fValue[inode]){
       //first examine the node that contains the point
       UpdateRange(GetLeft(inode),point, range, res);
       UpdateRange(GetRight(inode),point, range, res);
    } else {
-      UpdateRange(GetLeft(inode),point, range, res);
       UpdateRange(GetRight(inode),point, range, res);
+      UpdateRange(GetLeft(inode),point, range, res);
    }
 }