diff --git a/src/FillSpace.jsx b/src/FillSpace.jsx
index 498e423..2b06748 100644
--- a/src/FillSpace.jsx
+++ b/src/FillSpace.jsx
@@ -211,6 +211,7 @@ class FillSpace extends Component {
   _handleWheel = (event) => {
     const { items } = this.props;
     if (!Array.isArray(items)) return;
+    if (this.ref && event.target && !this.ref.contains(event.target)) return;
     const { pageSize, currentPage } = this.state;
     const pageCount = Math.max(1, Math.ceil(items.length / Math.max(1, pageSize)));
     const delta = event.deltaY || 0;