diff --git a/yt_dlp/downloader/http.py b/yt_dlp/downloader/http.py
index 6dcf7e7b69..2771d8bfeb 100644
--- a/yt_dlp/downloader/http.py
+++ b/yt_dlp/downloader/http.py
@@ -63,6 +63,10 @@ class HttpFD(FileDownloader):
 
         ctx.is_resume = ctx.resume_len > 0
 
+        ctx.start_len = 0
+        if ctx.is_resume:
+            ctx.start_len = ctx.resume_len
+
         class SucceedDownload(Exception):
             pass
 
@@ -295,7 +299,7 @@ class HttpFD(FileDownloader):
                 if ctx.data_len is None:
                     eta = None
                 else:
-                    eta = self.calc_eta(start, time.time(), ctx.data_len - ctx.resume_len, byte_counter - ctx.resume_len)
+                    eta = self.calc_eta(ctx.start_time, time.time(), ctx.data_len - ctx.start_len, byte_counter - ctx.start_len)
 
                 self._hook_progress({
                     'status': 'downloading',