diff --git a/bwa.spec b/bwa.spec
index da6128b..58e4d0b 100644
--- a/bwa.spec
+++ b/bwa.spec
@@ -1,13 +1,14 @@
 Name:           bwa
 Version:        0.7.5a
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Burrows-Wheeler Alignment tool
 
 Group:          Applications/Engineering
 License:        GPLv3
 URL:            http://bio-bwa.sourceforge.net/
 Source0:        http://downloads.sourceforge.net/bio-%{name}/%{name}-%{version}.tar.bz2
-Patch0:		bwa-nosse2-i386arm.patch
+# 0.7.x versions only build on x86_64
+ExclusiveArch:	x86_64
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
 BuildRequires:  zlib-devel
@@ -21,11 +22,6 @@ for read shorter than 150bp and the other for longer reads.
 %prep
 %setup -q
 
-# SSE2 only on x86_64
-%ifnarch x86_64
-%patch0 -p1 -b .bwa-nosse2-i386.patch
-%endif
-
 
 %build
 make %{?_smp_mflags} CFLAGS="%{optflags}"
@@ -56,6 +52,9 @@ rm -rf %{buildroot}
 
 
 %changelog
+* Sun Oct 27 2013 Adam Huffman <bloch@verdurin.com> - 0.7.5a-2
+- Remove nosse2 patch because 0.7+ versions only build on x86_64
+
 * Sat Oct 26 2013 Adam Huffman <bloch@verdurin.com> - 0.7.5a-1
 - Update to upstream 0.7.5a