diff --git a/file-5.04-cr2.patch b/file-5.04-cr2.patch
new file mode 100644
index 0000000..d0374fd
--- /dev/null
+++ b/file-5.04-cr2.patch
@@ -0,0 +1,21 @@
+diff --git a/magic/Magdir/images b/magic/Magdir/images
+index 7586ad8..90f1694 100644
+--- a/magic/Magdir/images
++++ b/magic/Magdir/images
+@@ -63,6 +63,16 @@
+ 0	string		IIN1		NIFF image data
+ !:mime	image/x-niff
+ 
++# Canon RAW version 2 (CR2) files are a kind of TIFF with an extra magic
++# number. Put this above the TIFF test to make sure we detect them.
++# These are apparently all little-endian.
++# From: Adam Buchbinder <adam.buchbinder@gmail.com>
++# URL: http://libopenraw.freedesktop.org/wiki/Canon_CR2
++0	string		II\x2a\0\x10\0\0\0CR	Canon CR2 raw image data
++!:mime	image/x-canon-cr2
++>10	byte		x	\b, version %d.
++>11	byte		x	\b%d
++
+ # Tag Image File Format, from Daniel Quinlan (quinlan@yggdrasil.com)
+ # The second word of TIFF files is the TIFF version number, 42, which has
+ # never changed.  The TIFF specification recommends testing for it.
diff --git a/file.spec b/file.spec
index eda306b..329d55b 100644
--- a/file.spec
+++ b/file.spec
@@ -5,7 +5,7 @@
 Summary: A utility for determining file types
 Name: file
 Version: 5.04
-Release: 16%{?dist}
+Release: 17%{?dist}
 License: BSD
 Group: Applications/File
 Source0: ftp://ftp.astron.com/pub/file/file-%{version}.tar.gz
@@ -27,6 +27,7 @@ Patch13: file-5.04-python-2.7.patch
 Patch14: file-5.04-webm.patch
 Patch15: file-5.05-latex-improve.patch
 Patch16: file-5.05-rpm-archs.patch
+Patch17: file-5.04-cr2.patch
 
 Requires: file-libs = %{version}-%{release}
 BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
@@ -112,6 +113,7 @@ file(1) command.
 %patch15 -p1
 #fixes #676041
 %patch16 -p1
+%patch17 -p1
 
 iconv -f iso-8859-1 -t utf-8 < doc/libmagic.man > doc/libmagic.man_
 touch -r doc/libmagic.man doc/libmagic.man_
@@ -189,6 +191,9 @@ rm -rf $RPM_BUILD_ROOT
 %endif
 
 %changelog
+* Wed Jun 01 2011 Jan Kaluza <jkaluza@redhat.com> - 5.04-17
+- fix #709520 - backported CR2 format detection
+
 * Thu Feb 10 2011 Jan Kaluza <jkaluza@redhat.com> - 5.04-16
 - fix #676543 - improved TeX and LaTeX recognition
 - fix #676041 - detect all supported RPM architectures