diff --git a/cf/make-proto.pl b/cf/make-proto.pl
index a55a64fd3..5f957f6df 100644
--- a/cf/make-proto.pl
+++ b/cf/make-proto.pl
@@ -25,7 +25,7 @@ while(<>) {
 	if($line =~ /\)\s$/){
 	    $_ = $line;
 	    while(s/\*\//\ca/){
-		s/\/\*.*\ca//s;
+		s/\/\*(.|\n)*\ca//;
 	    }
 	    s/^\s*//;
 	    s/\s$//;