diff --git a/Source/Engine/Core/Collections/Array.h b/Source/Engine/Core/Collections/Array.h
index 9c50c5ccf..d67aecbc1 100644
--- a/Source/Engine/Core/Collections/Array.h
+++ b/Source/Engine/Core/Collections/Array.h
@@ -250,6 +250,16 @@ public:
         return _count == 0;
     }
 
+    /// <summary>
+    /// Determines if given index is valid.
+    /// </summary>
+    /// <param name="index">The index.</param>
+    /// <returns><c>true</c> if is valid a index; otherwise, <c>false</c>.</returns>
+    bool IsValidIndex(int32 index) const
+    {
+        return index < _count && index >= 0;
+    }
+
     /// <summary>
     /// Gets the pointer to the first item in the collection (linear allocation).
     /// </summary>
@@ -737,18 +747,7 @@ public:
             ::Swap(other, *this);
         }
     }
-    
-    /// <summary>
-    /// Determines if is valid index.
-    /// </summary>
-    /// <param name="index">The index.</param>
-    /// <returns>
-    ///   <c>true</c> if is valid a index; otherwise, <c>false</c>.
-    /// </returns>
-    bool IsValidIndex(int index) const
-    {
-        return index < _count && index >= 0;
-    }
+
     /// <summary>
     /// Reverses the order of the added items in the collection.
     /// </summary>