diff --git a/Scripts/Layout/ScrollSnap.cs b/Scripts/Layout/ScrollSnap.cs
index 0d93a28..b7f8b68 100644
--- a/Scripts/Layout/ScrollSnap.cs
+++ b/Scripts/Layout/ScrollSnap.cs
@@ -136,12 +136,13 @@ namespace UnityEngine.UI.Extensions
             }
             if (_scroll_rect.horizontalScrollbar != null && _scroll_rect.horizontal)
             {
-                var hscroll = _scroll_rect.horizontalScrollbar.gameObject.AddComponent<ScrollSnapScrollbarHelper>();
+                
+                   var hscroll = _scroll_rect.horizontalScrollbar.gameObject.GetOrAddComponent<ScrollSnapScrollbarHelper>();
                 hscroll.ss = this;
             }
             if (_scroll_rect.verticalScrollbar != null && _scroll_rect.vertical)
             {
-                var vscroll = _scroll_rect.verticalScrollbar.gameObject.AddComponent<ScrollSnapScrollbarHelper>();
+                var vscroll = _scroll_rect.verticalScrollbar.gameObject.GetOrAddComponent<ScrollSnapScrollbarHelper>();
                 vscroll.ss = this;
             }
         }
diff --git a/Scripts/Utilities/ExtentionMethods.cs b/Scripts/Utilities/ExtentionMethods.cs
new file mode 100644
index 0000000..68220c4
--- /dev/null
+++ b/Scripts/Utilities/ExtentionMethods.cs
@@ -0,0 +1,14 @@
+using UnityEngine;
+
+public static class ExtentionMethods
+{
+    public static T GetOrAddComponent<T>(this GameObject child) where T : Component
+    {
+        T result = child.GetComponent<T>();
+        if (result == null)
+        {
+            result = child.AddComponent<T>();
+        }
+        return result;
+    }
+}
diff --git a/Scripts/Utilities/ExtentionMethods.cs.meta b/Scripts/Utilities/ExtentionMethods.cs.meta
new file mode 100644
index 0000000..cfa1894
--- /dev/null
+++ b/Scripts/Utilities/ExtentionMethods.cs.meta
@@ -0,0 +1,11 @@
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