diff --git a/README.md b/README.md
index c9cde22..f96e6eb 100644
--- a/README.md
+++ b/README.md
@@ -18,4 +18,4 @@ The output will default to `out.mp4` but may be any file type that FFmpeg suppor
 
 The downloads will be cached in a local `tmp` directory and are continued in case the connection fails.
 
-If no URL is given, the files are assumed to be called `webcams.webm` and `deskshare.webm`.
+If `-` is given as URL is given, the files are assumed to be called `webcams.webm` and `deskshare.webm`.