diff --git a/fab/drl2gerber b/fab/drl2gerber
index 581f658..b39aedb 100755
--- a/fab/drl2gerber
+++ b/fab/drl2gerber
@@ -2,8 +2,8 @@
 #
 # drl2gerber - Convert a KiCAD-generated Excellon drill file to Gerber
 #
-# Written 2011 by Werner Almesberger
-# Copyright 2011 Werner Almesberger
+# Written 2011, 2017 by Werner Almesberger
+# Copyright 2011, 2017 Werner Almesberger
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -22,20 +22,20 @@ print "%FSLAX34Y34*%\n" || die;	# format
 while (<>) {
 	chop;
 	if (/^T(\d+)C/) {
-		print "%ADD", $1+10, "C,$'*%\n" || die;
+		print "%ADD", $1 + 10, "C,$'*%\n" || die;
 		next;
 	}
 	if (/^T(\d+)$/) {
-		print "G54D", $1+10, "*\n" || die;
+		print "G54D", $1 + 10, "*\n" || die;
 		next;
 	}
 	if (/^X([-0-9.]+)Y([-0-9.]+)$/) {
-		printf("X%dY%dD03*\n", $1*10000, $2*10000) || die;
+		printf("X%dY%dD03*\n", $1 * 10000, $2 * 10000) || die;
 		next;
 	}
 	if (/^X([-0-9.]+)Y([-0-9.]+)G85X([-0-9.]+)Y([-0-9.]+)$/) {
 		printf("X%dY%dD02*\nX%dY%dD01*\n",
-		    $1*10000, $2*10000, $3*10000, $4*10000) || die;
+		    $1 * 10000, $2 * 10000, $3 * 10000, $4 * 10000) || die;
 		next;
 	}
 }