diff --git a/internal/download/download.go b/internal/download/download.go
index 26c7795ce5..dedfe2478d 100644
--- a/internal/download/download.go
+++ b/internal/download/download.go
@@ -274,6 +274,9 @@ func (w *downloadWriter) Write(buf []byte) (int, error) {
 
 	// Report progress.
 	w.written += int64(n)
+	if w.size <= 0 {
+		return n, err
+	}
 	pct := w.written * 10 / w.size * 10
 	if pct != w.lastpct {
 		if w.lastpct != 0 {