diff --git a/Scripts/Layout/HorizontalScrollSnap.cs b/Scripts/Layout/HorizontalScrollSnap.cs
index 3fe3cfe..1a85021 100644
--- a/Scripts/Layout/HorizontalScrollSnap.cs
+++ b/Scripts/Layout/HorizontalScrollSnap.cs
@@ -16,6 +16,7 @@ namespace UnityEngine.UI.Extensions
             _isVertical = false;
             _childAnchorPoint = new Vector2(0, 0.5f);
             _currentPage = StartingScreen;
+            panelDimensions = gameObject.GetComponent<RectTransform>().rect;
             UpdateLayout();
         }
 
diff --git a/Scripts/Layout/VerticalScrollSnap.cs b/Scripts/Layout/VerticalScrollSnap.cs
index 8cb9fbf..f6be4ec 100644
--- a/Scripts/Layout/VerticalScrollSnap.cs
+++ b/Scripts/Layout/VerticalScrollSnap.cs
@@ -16,6 +16,7 @@ namespace UnityEngine.UI.Extensions
             _isVertical = true;
             _childAnchorPoint = new Vector2(0.5f,0);
             _currentPage = StartingScreen;
+            panelDimensions = gameObject.GetComponent<RectTransform>().rect;
             UpdateLayout();
         }