diff --git a/common/treeitem.cpp b/common/treeitem.cpp
index 3081bb9..ce65a0b 100644
--- a/common/treeitem.cpp
+++ b/common/treeitem.cpp
@@ -91,3 +91,10 @@ int TreeItem::row() const
     }
     return 0;
 }
+
+TreeItem* TreeItem::child(int row)
+{ 
+    std::list<TreeItem*>::iterator child = childItems.begin();  
+    std::advance(child, row); 
+    return *child; 
+}
\ No newline at end of file
diff --git a/common/treeitem.h b/common/treeitem.h
index b28d076..b4971b8 100644
--- a/common/treeitem.h
+++ b/common/treeitem.h
@@ -21,16 +21,6 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include "ustring.h"
 #include "basetypes.h"
 
-template <typename ForwardIt>
-ForwardIt u_std_next(
-    ForwardIt it, 
-    typename std::iterator_traits<ForwardIt>::difference_type n = 1
-)
-{
-    std::advance(it, n);
-    return it;
-}
-
 class TreeItem
 {
 public:
@@ -47,14 +37,14 @@ public:
     UINT8 insertChildAfter(TreeItem *item, TreeItem *newItem);                 // Non-trivial implementation in CPP file
 
     // Model support operations
-    TreeItem *child(int row) { return *u_std_next(childItems.begin(), row); }
+    TreeItem *child(int row);                                                  // Non-trivial implementation in CPP file
     int childCount() const {return childItems.size(); }
     int columnCount() const { return 5; }
     UString data(int column) const;                                            // Non-trivial implementation in CPP file
     int row() const;                                                           // Non-trivial implementation in CPP file
     TreeItem *parent() { return parentItem; }
 
-    // Reading operations for item parameters
+    // Getters and setters for item parameters
     UString name() const  { return itemName; }
     void setName(const UString &text) { itemName = text; }