diff --git a/srcpkgs/nsjail/patches/fix-format-warnings.patch b/srcpkgs/nsjail/patches/fix-format-warnings.patch
new file mode 100644
index 00000000000..274d6c6d2f2
--- /dev/null
+++ b/srcpkgs/nsjail/patches/fix-format-warnings.patch
@@ -0,0 +1,44 @@
+From 9f064737de83ee0fa39bac5c6671a8251fec437e Mon Sep 17 00:00:00 2001
+From: Robert Swiecki <robert@swiecki.net>
+Date: Thu, 12 Sep 2019 22:21:49 +0200
+Subject: [PATCH] user: better formatting directives for printf'like functions
+
+---
+ user.cc | 10 +++++-----
+ 1 file changed, 5 insertions(+), 5 deletions(-)
+
+diff --git user.cc user.cc
+index d2342aa..e7050dc 100644
+--- user.cc
++++ user.cc
+@@ -257,22 +257,22 @@ bool initNsFromChild(nsjconf_t* nsjconf) {
+ 	groupsString += "]";
+ 
+ 	if (!setResGid(nsjconf->gids[0].inside_id)) {
+-		PLOG_E("setresgid(%u)", nsjconf->gids[0].inside_id);
++		PLOG_E("setresgid(%lu)", (unsigned long)nsjconf->gids[0].inside_id);
+ 		return false;
+ 	}
+ 
+-	LOG_D("setgroups(%lu, %s)", groups.size(), groupsString.c_str());
++	LOG_D("setgroups(%zu, %s)", groups.size(), groupsString.c_str());
+ 	if (setgroups(groups.size(), groups.data()) == -1) {
+ 		/* Indicate error if specific groups were requested */
+ 		if (groups.size() > 0) {
+-			PLOG_E("setgroups(%lu, %s) failed", groups.size(), groupsString.c_str());
++			PLOG_E("setgroups(%zu, %s) failed", groups.size(), groupsString.c_str());
+ 			return false;
+ 		}
+-		PLOG_D("setgroups(%lu, %s) failed", groups.size(), groupsString.c_str());
++		PLOG_D("setgroups(%zu, %s) failed", groups.size(), groupsString.c_str());
+ 	}
+ 
+ 	if (!setResUid(nsjconf->uids[0].inside_id)) {
+-		PLOG_E("setresuid(%u)", nsjconf->uids[0].inside_id);
++		PLOG_E("setresuid(%lu)", (unsigned long)nsjconf->uids[0].inside_id);
+ 		return false;
+ 	}
+ 
+-- 
+2.24.0
+
diff --git a/srcpkgs/nsjail/patches/musl.patch b/srcpkgs/nsjail/patches/musl.patch
deleted file mode 100644
index dde09dfcd60..00000000000
--- a/srcpkgs/nsjail/patches/musl.patch
+++ /dev/null
@@ -1,14 +0,0 @@
---- mnt.cc	2018-04-18 14:11:19.000000000 +0200
-+++ mnt.cc	2018-04-21 13:07:43.814692651 +0200
-@@ -47,6 +47,11 @@
- #include "subproc.h"
- #include "util.h"
- 
-+#if !defined(ST_RELATIME)
-+/* In musl libc this is not (yet?) defined */
-+#define ST_RELATIME 4096
-+#endif
-+
- namespace mnt {
- 
- #if !defined(MS_LAZYTIME)
diff --git a/srcpkgs/nsjail/template b/srcpkgs/nsjail/template
index 9eaced49863..3cec6c688f5 100644
--- a/srcpkgs/nsjail/template
+++ b/srcpkgs/nsjail/template
@@ -1,7 +1,7 @@
 # Template file for 'nsjail'
 pkgname=nsjail
 version=2.9
-revision=1
+revision=2
 build_style=gnu-makefile
 hostmakedepends="bison flex pkg-config protobuf"
 makedepends="libnl3-devel protobuf-devel"
@@ -15,11 +15,6 @@ checksum="f8578a48330d3d089c9234a2b562be08043f8fe77453c322724acdf403d0afc3
  49d2327c794c90aca50a9933c00d453705534b16e5f42d8c8e19c3d274f5e5f8"
 
 archs="aarch64* armv5tel* armv6l* armv7l* x86_64*"
-CXXFLAGS="-Wno-format-truncation"
-
-case "$XBPS_TARGET_MACHINE" in
-	armv*) broken="https://build.voidlinux.org/builders/armv6l_builder/builds/20655/steps/shell_3/logs/stdio";;
-esac
 
 post_extract() {
 	rmdir kafel
@@ -33,5 +28,4 @@ pre_build() {
 do_install() {
 	vbin ${pkgname}
 	vman nsjail.1
-	vlicense LICENSE
 }