diff --git a/Gems/Terrain/Code/Source/Components/TerrainWorldRendererComponent.h b/Gems/Terrain/Code/Source/Components/TerrainWorldRendererComponent.h
index 354b2fde34..140b830da1 100644
--- a/Gems/Terrain/Code/Source/Components/TerrainWorldRendererComponent.h
+++ b/Gems/Terrain/Code/Source/Components/TerrainWorldRendererComponent.h
@@ -46,7 +46,7 @@ namespace Terrain
             WorldSizeCount,
         };
 
-        WorldSize m_worldSize;
+        WorldSize m_worldSize = WorldSize::_1024Meters;
     };