diff --git a/file-4.26-devdrv.patch b/file-4.26-devdrv.patch
new file mode 100644
index 0000000..83bbdbd
--- /dev/null
+++ b/file-4.26-devdrv.patch
@@ -0,0 +1,47 @@
+diff -up file-4.26/magic/Magdir/msdos.devdrv file-4.26/magic/Magdir/msdos
+--- file-4.26/magic/Magdir/msdos.devdrv	2008-10-07 16:00:29.000000000 +0200
++++ file-4.26/magic/Magdir/msdos	2008-10-07 16:02:01.000000000 +0200
+@@ -293,22 +293,37 @@
+ >10	string	>\x23			
+ >>10	string	!\x2e			
+ >>>17	string	<\x5B			
+->>>>10	string	x			\b, name: %.8s
+-#UDMA.SYS KEYB.SYS CMD640X2.SYS
++>>>>10	string	CMD640X2.SYS			\b, name: %.8s
++#UDMA.SYS
+ >10	string	<\x41			
+ >>12	string	>\x40			
+ >>>10	string	!$			
+->>>>12	string	x			\b, name: %.8s
+-#BTCDROM.SYS ASPICD.SYS
++>>>>12	string	UDMA.SYS			\b, name: %.8s
++#CMD640X2.SYS
++>10	string	<\x41			
++>>12	string	>\x40			
++>>>10	string	!$			
++>>>>12	string	CMD640X2.SYS			\b, name: %.8s
++#KEYB.SYS
++>10	string	<\x41			
++>>12	string	>\x40			
++>>>10	string	!$			
++>>>>12	string	KEYB.SYS			\b, name: %.8s
++#BTCDROM.SYS
++>22	string	>\x40			
++>>22	string	<\x5B			
++>>>23	string	<\x5B			
++>>>>22	string	BTCDROM.SYS			\b, name: %.8s
++#ASPICD.SYS
+ >22	string	>\x40			
+ >>22	string	<\x5B			
+ >>>23	string	<\x5B			
+->>>>22	string	x			\b, name: %.8s
++>>>>22	string	ASPICD.SYS			\b, name: %.8s
+ #ATAPICD.SYS
+ >76	string	\0			
+ >>77	string	>\x40			
+ >>>77	string	<\x5B			
+->>>>77	string	x			\b, name: %.8s
++>>>>77	string	ATAPICD.SYS			\b, name: %.8s
+ #0	byte		0x8c		DOS executable (COM)
+ # 0xeb conflicts with "sequent" magic
+ #0	byte		0xeb		DOS executable (COM)
diff --git a/file.spec b/file.spec
index ef78420..9e04809 100644
--- a/file.spec
+++ b/file.spec
@@ -5,12 +5,13 @@
 Summary: A utility for determining file types
 Name: file
 Version: 4.26
-Release: 1%{?dist}
+Release: 2%{?dist}
 License: BSD
 Group: Applications/File
 Source0: ftp://ftp.astron.com/pub/file/file-%{version}.tar.gz
 URL: http://www.darwinsys.com/file/
 patch0: file-4.21-pybuild.patch
+patch1: file-4.26-devdrv.patch
 
 Requires: file-libs = %{version}-%{release}
 BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
@@ -57,6 +58,8 @@ file(1) command.
 # Don't use -b -- it will lead to poblems when compiling magic file
 %setup -q
 %patch0 -p1
+#fixes #463809
+%patch1 -p1
 
 iconv -f iso-8859-1 -t utf-8 < doc/libmagic.man > doc/libmagic.man_
 touch -r doc/libmagic.man doc/libmagic.man_
@@ -130,6 +133,11 @@ rm -rf $RPM_BUILD_ROOT
 %endif
 
 %changelog
+* Tue Oct 07 2008 Daniel Novotny <dnovotny@redhat.com> 4.26-2
+- fix #463809: rpmbuild rpmfcClassify: Assertion fails on some binary files
+  (false positive test on "DOS device driver" crashed file(1)
+   and rpmbuild(8) failed)  
+
 * Mon Sep 15 2008 Daniel Novotny <dnovotny@redhat.com> 4.26-1
 - new upstream version: fixes #462064