diff --git a/Shorewall/Macros/macro.GRE b/Shorewall/Macros/macro.GRE
index bbf24ed13..5515a7be6 100644
--- a/Shorewall/Macros/macro.GRE
+++ b/Shorewall/Macros/macro.GRE
@@ -1,13 +1,10 @@
 #
-# Shorewall - GRE Macro
+# Shorewall -- /usr/share/shorewall/macro.GRE
 #
-# /usr/share/shorewall/macro.GRE
-#
-#	This macro (bi-directional) handles Generic Routing Encapsulation
-#	traffic (RFC 1701)
+# This macro (bidirectional) handles Generic Routing Encapsulation (GRE).
 #
 ###############################################################################
-#ACTION	SOURCE	DEST	PROTO	DEST	SOURCE	ORIGIN	RATE	USER/
-#				PORT(S)	PORT(S)	DEST	LIMIT	GROUP
+#ACTION	SOURCE	DEST	PROTO	DPORT	SPORT	ORIGDEST	RATE	USER
+
 PARAM	-	-	47	# GRE
 PARAM	DEST	SOURCE	47	# GRE