diff --git a/yt-to-webpage.pl b/yt-to-webpage.pl
index 2fea4c4..068ef0f 100755
--- a/yt-to-webpage.pl
+++ b/yt-to-webpage.pl
@@ -6,7 +6,7 @@
 my $slug = shift @ARGV; 
 my $url = shift @ARGV;
 
-if (!$url || $url !~ m|^https://www.youtube.com|) {
+if (!$url || $url !~ m|^\Qhttps://www.youtube.com|) {
 	print STDERR "Usage:\n";
 	print STDERR "$0 project-name https://www.youtube.com/watch?v=jNQXAC9IVRw\n";
 	exit 1;