diff --git a/mail/claws-mail-vcalendar/patches/patch-libical_libical_Makefile_in b/mail/claws-mail-vcalendar/patches/patch-libical_libical_Makefile_in
deleted file mode 100644
index 420a31f8017..00000000000
--- a/mail/claws-mail-vcalendar/patches/patch-libical_libical_Makefile_in
+++ /dev/null
@@ -1,12 +0,0 @@
-$OpenBSD: patch-libical_libical_Makefile_in,v 1.2 2007/10/04 09:13:52 pyr Exp $
---- libical/libical/Makefile.in.orig	Mon Sep 17 11:10:29 2007
-+++ libical/libical/Makefile.in	Thu Oct  4 10:50:35 2007
-@@ -323,7 +323,7 @@ libical_la_SOURCES = \
- 	vsnprintf.c		\
- 	icallangbind.h		
- 
--libicalincludedir = $(includedir)
-+libicalincludedir = $(includedir)/claws-mail
- libicalinclude_HEADERS = ical.h 
- 
- # ORDERING OF HEADERS IS SIGNIFICANT. Don't change this ordering. It