diff --git a/fix-err-of-wrong-return-type.patch b/fix-err-of-wrong-return-type.patch
index 18307d0..b883522 100644
--- a/fix-err-of-wrong-return-type.patch
+++ b/fix-err-of-wrong-return-type.patch
@@ -9,3 +9,25 @@ diff -Naur drbd-9.0.16+git.ab9777df.orig/drbd/drbd-kernel-compat/tests/have_blk_
  }
  
  #ifndef __same_type
+diff -Naur drbd-9.0.16+git.ab9777df.orig/drbd/drbd-kernel-compat/tests/have_proc_create_single.c drbd-9.0.16+git.ab9777df/drbd/drbd-kernel-compat/tests/have_proc_create_single.c
+--- drbd-9.0.16+git.ab9777df.orig/drbd/drbd-kernel-compat/tests/have_proc_create_single.c	2020-11-03 17:45:49.362231056 +0800
++++ drbd-9.0.16+git.ab9777df/drbd/drbd-kernel-compat/tests/have_proc_create_single.c	2020-11-05 11:18:57.996540948 +0800
+@@ -8,6 +8,7 @@
+ 
+ static int foo_seq_show(struct seq_file *seq, void *v)
+ {
++		return 0;
+ }
+ 
+ struct proc_dir_entry *foo(void)
+diff -Naur drbd-9.0.16+git.ab9777df.orig/drbd/drbd-kernel-compat/tests/sock_ops_returns_addr_len.c drbd-9.0.16+git.ab9777df/drbd/drbd-kernel-compat/tests/sock_ops_returns_addr_len.c
+--- drbd-9.0.16+git.ab9777df.orig/drbd/drbd-kernel-compat/tests/sock_ops_returns_addr_len.c	2020-11-03 17:45:49.362231056 +0800
++++ drbd-9.0.16+git.ab9777df/drbd/drbd-kernel-compat/tests/sock_ops_returns_addr_len.c	2020-11-05 12:02:16.457436250 +0800
+@@ -1,5 +1,6 @@
+ #include <linux/net.h>
+ int always_getpeername(struct socket *sock, struct sockaddr *addr)
+ {
+-	return sock->ops->getname(sock, addr, 2);
++	sock->ops->getname(sock, addr, 2);
++	return 0;
+ }