diff --git a/lib/progress.c b/lib/progress.c
index 4bcd615eba..62e61d45b4 100644
--- a/lib/progress.c
+++ b/lib/progress.c
@@ -377,7 +377,7 @@ static curl_off_t trspeed(curl_off_t size, /* number of bytes */
 {
   if(us < 1)
     return size * 1000000;
-  return (curl_off_t)((long double)size/us * 1000000);
+  return (curl_off_t)((long double)size/(long double)us * 1000000);
 }
 
 /* returns TRUE if it's time to show the progress meter */