diff --git a/libtpms-0.5.1-secondary.patch b/libtpms-0.5.1-secondary.patch
new file mode 100644
index 0000000..04124d6
--- /dev/null
+++ b/libtpms-0.5.1-secondary.patch
@@ -0,0 +1,46 @@
+diff -up libtpms-0.5.1/src/tpm_crypto_freebl.c.secondary libtpms-0.5.1/src/tpm_crypto_freebl.c
+--- libtpms-0.5.1/src/tpm_crypto_freebl.c.secondary	2011-12-20 17:28:41.000000000 +0100
++++ libtpms-0.5.1/src/tpm_crypto_freebl.c	2011-12-20 17:43:53.000000000 +0100
+@@ -1841,12 +1841,17 @@ void TPM_SHA1Delete(void **context)
+ #if defined (__x86_64__) || \
+     defined(__amd64__) || \
+     defined(__ia64__) || \
+-    defined(__powerpc64__)
++    defined(__powerpc64__) || \
++    defined(__s390x__) || \
++    defined(__sparc__) && defined(__arch64__)
+ #define IS_64
+ typedef PRUint64 SHA_HW_t;
+ 
+ #elif defined (__i386__) || \
+-    defined (__powerpc__)
++    defined (__powerpc__) || \
++    defined (__s390__) || \
++    defined (__sparc__) || \
++    defined (__arm__)
+ typedef PRUint32 SHA_HW_t;
+ #undef IS_64
+ 
+diff -up libtpms-0.5.1/tests/freebl_sha1flattensize.c.secondary libtpms-0.5.1/tests/freebl_sha1flattensize.c
+--- libtpms-0.5.1/tests/freebl_sha1flattensize.c.secondary	2011-12-20 18:17:02.000000000 +0100
++++ libtpms-0.5.1/tests/freebl_sha1flattensize.c	2011-12-20 18:17:32.000000000 +0100
+@@ -8,12 +8,17 @@
+ #if defined (__x86_64__) || \
+     defined (__amd64__) || \
+     defined (__ia64__) || \
+-    defined (__powerpc64__)
++    defined (__powerpc64__) || \
++    defined(__s390x__) || \
++    defined(__sparc__) && defined(__arch64__)
+ 
+ #define EXPECTED_LIB_FLATTENSIZE 248
+ 
+ #elif defined (__i386__) || \
+-    defined (__powerpc__)
++    defined (__powerpc__) || \
++    defined (__s390__) || \
++    defined (__sparc__) || \
++    defined (__arm__)
+ 
+ #define EXPECTED_LIB_FLATTENSIZE 160
+ 
diff --git a/libtpms.spec b/libtpms.spec
index 6525a7d..fb713be 100644
--- a/libtpms.spec
+++ b/libtpms.spec
@@ -2,7 +2,7 @@
 
 %define name      libtpms
 %define version   0.5.1
-%define release   11
+%define release   12
 
 # Valid crypto subsystems are 'freebl' and 'openssl'
 %define crypto_subsystem  freebl
@@ -18,6 +18,7 @@ License:        BSD
 Group:          Development/Libraries
 Url:            http://sourceforge.net/projects/ibmswtpm
 Source:         http://bergerstefan.users.sourceforge.net/libtpms/%{name}-%{version}.tar.gz
+Patch0:         %{name}-0.5.1-secondary.patch
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root
 %if %{crypto_subsystem} == openssl
 BuildRequires:  openssl-devel
@@ -60,6 +61,7 @@ Libtpms header files and documentation.
 
 %prep
 %setup -q
+%patch0 -p1
 
 %build
 
@@ -93,6 +95,9 @@ make %{?_smp_mflags} install DESTDIR=${RPM_BUILD_ROOT}
 %postun -p /sbin/ldconfig
 
 %changelog
+* Tue Dec 20 2011 Dan Horák <dan[at]danny.cz> - 0.5.1-12
+- fix build on secondary arches
+
 * Wed Nov 2 2011 Stefan Berger - 0.5.1-11
 - added (lib)gmp as runtime dependency