diff --git a/Libraries/Lists/VirtualizedList.js b/Libraries/Lists/VirtualizedList.js
index 8455c51d616..f0ca4054f1c 100644
--- a/Libraries/Lists/VirtualizedList.js
+++ b/Libraries/Lists/VirtualizedList.js
@@ -1181,7 +1181,8 @@ class VirtualizedList extends React.PureComponent<Props, State> {
 
   _renderDebugOverlay() {
     const normalize =
-      this._scrollMetrics.visibleLength / this._scrollMetrics.contentLength;
+      this._scrollMetrics.visibleLength /
+      (this._scrollMetrics.contentLength || 1);
     const framesInLayout = [];
     const itemCount = this.props.getItemCount(this.props.data);
     for (let ii = 0; ii < itemCount; ii++) {