diff --git a/packages/rrweb-snapshot/src/rebuild.ts b/packages/rrweb-snapshot/src/rebuild.ts
index 692da2d281..744a268dec 100644
--- a/packages/rrweb-snapshot/src/rebuild.ts
+++ b/packages/rrweb-snapshot/src/rebuild.ts
@@ -354,7 +354,7 @@ function buildNode(
             (node as unknown as RRCanvasElement).rr_dataURL = value.toString();
         } else if (tagName === 'img' && name === 'rr_dataURL') {
           const image = node as HTMLImageElement;
-          if (!image.currentSrc.startsWith('data:')) {
+          if (!image.currentSrc?.startsWith('data:')) {
             // Backup original img src. It may not have been set yet.
             image.setAttribute(
               'rrweb-original-src',