diff --git a/netsniff-ng-0.6.4-trafgen-fix-stdin.patch b/netsniff-ng-0.6.4-trafgen-fix-stdin.patch
new file mode 100644
index 0000000..8a7b944
--- /dev/null
+++ b/netsniff-ng-0.6.4-trafgen-fix-stdin.patch
@@ -0,0 +1,31 @@
+From ba5f7aecf33d62670f20021b4bc3679e6c50e6fc Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Jaroslav=20=C5=A0karvada?= <jskarvad@redhat.com>
+Date: Sat, 20 Oct 2018 22:35:28 +0200
+Subject: [PATCH] trafgen: fixed '--in -' to work again with STDIN
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This has been broken by commit 4e47fd021a6945aa626eaef4446c5b547d8c2a85.
+
+Signed-off-by: Jaroslav Škarvada <jskarvad@redhat.com>
+---
+ trafgen_parser.y | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/trafgen_parser.y b/trafgen_parser.y
+index 7fffdd9..53723dd 100644
+--- a/trafgen_parser.y
++++ b/trafgen_parser.y
+@@ -1513,7 +1513,7 @@ void compile_packets(char *file, bool verbose, unsigned int cpu,
+ 	char tmp_file[128];
+ 	int ret = -1;
+ 
+-	if (access(file, R_OK)) {
++	if (strncmp("-", file, strlen("-")) && access(file, R_OK)) {
+ 		fprintf(stderr, "Cannot access %s: %s!\n", file, strerror(errno));
+ 		die();
+ 	}
+-- 
+2.14.4
+
diff --git a/netsniff-ng.spec b/netsniff-ng.spec
index 6dc7777..f5162d4 100644
--- a/netsniff-ng.spec
+++ b/netsniff-ng.spec
@@ -1,6 +1,6 @@
 Name:		netsniff-ng
 Version:	0.6.4
-Release:	4%{?dist}
+Release:	5%{?dist}
 Summary:	Packet sniffing beast
 Group:		Applications/Internet
 License:	GPLv2
@@ -13,6 +13,8 @@ BuildRequires:	libsodium-devel
 # rhbz#1111779, this should be probably dropped in f23 or later
 Provides:	mausezahn = 0.40-9
 Obsoletes:	mausezahn < 0.40-9
+# https://github.com/netsniff-ng/netsniff-ng/pull/199
+Patch0:	netsniff-ng-0.6.4-trafgen-fix-stdin.patch
 
 %description
 netsniff-ng is a high performance Linux network sniffer for packet inspection.
@@ -32,6 +34,7 @@ netsniff-ng toolkit currently consists of the following utilities:
 
 %prep
 %setup -q
+%patch0 -p1 -b .trafgen-fix-stdin
 
 %build
 export NACL_INC_DIR=$(pkg-config --variable=includedir libsodium )/sodium
@@ -53,6 +56,10 @@ make install PREFIX=%{_prefix} ETCDIR=%{_sysconfdir} DESTDIR="%{buildroot}"
 %{_mandir}/man8/*
 
 %changelog
+* Sat Oct 20 2018 Jaroslav Škarvada <jskarvad@redhat.com> - 0.6.4-5
+- Fixed trafgen '--in -' to work again with the STDIN
+  Resolves: rhbz#1641273
+
 * Fri Jul 20 2018 Jaroslav Škarvada <jskarvad@redhat.com> - 0.6.4-4
 - Fixed FTBFS by adding gcc requirement
   Resolves: rhbz#1604949