diff --git a/contrib/block_time.pl b/contrib/block_time.pl
index 1b8c13351..e91f22d19 100755
--- a/contrib/block_time.pl
+++ b/contrib/block_time.pl
@@ -19,7 +19,7 @@ if ($block <= $blockcount) {
 	die "That block has already happened!";
 } else {
 	my $diff    = $block - $blockcount;
-	my $minutes = $diff*2.5;
+	my $minutes = $diff*1.25; # 75s in minutes
 	my $seconds = $minutes*60;
 	my $now     = time;
 	my $then    = $now + $seconds;