diff --git a/kernel/model/export.go b/kernel/model/export.go
index 38b39563f..be8fd4a4a 100644
--- a/kernel/model/export.go
+++ b/kernel/model/export.go
@@ -1057,6 +1057,7 @@ func processPDFWatermark(pdfCtx *pdfcpu.Context, watermark bool) {
 		return
 	}
 
+	wm.OnTop = true // Export PDF and add watermarks no longer covered by images https://github.com/siyuan-note/siyuan/issues/10818
 	err = pdfCtx.AddWatermarks(nil, wm)
 	if nil != err {
 		logging.LogErrorf("add watermark failed: %s", err)