diff --git a/grep-gnulib-ppc64le.patch b/grep-gnulib-ppc64le.patch
new file mode 100644
index 0000000..ee05437
--- /dev/null
+++ b/grep-gnulib-ppc64le.patch
@@ -0,0 +1,41 @@
+diff --git a/gnulib-tests/test-isnanl.h b/gnulib-tests/test-isnanl.h
+index 06e6a7c..2df10f8 100644
+--- a/gnulib-tests/test-isnanl.h
++++ b/gnulib-tests/test-isnanl.h
+@@ -51,6 +51,15 @@ main ()
+   /* A bit pattern that is different from a Quiet NaN.  With a bit of luck,
+      it's a Signalling NaN.  */
+   {
++#if defined __powerpc__ && LDBL_MANT_DIG == 106
++    /* This is PowerPC "double double", a pair of two doubles.  Inf and Nan are
++       represented as the corresponding 64-bit IEEE values in the first double;
++       the second is ignored.  Manipulate only the first double.  */
++    #undef NWORDS
++    #define NWORDS \
++      ((sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
++#endif
++
+     memory_long_double m;
+     m.value = NaNl ();
+ # if LDBL_EXPBIT0_BIT > 0
+diff --git a/gnulib-tests/test-signbit.c b/gnulib-tests/test-signbit.c
+index e8ea097..7e24292 100644
+--- a/gnulib-tests/test-signbit.c
++++ b/gnulib-tests/test-signbit.c
+@@ -151,6 +151,16 @@ test_signbitl ()
+     #define NWORDS \
+       ((sizeof (long double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
+     typedef union { long double value; unsigned int word[NWORDS]; } memory_long_double;
++
++#if defined __powerpc__ && LDBL_MANT_DIG == 106
++    /* This is PowerPC "double double", a pair of two doubles.  Inf and Nan are
++       represented as the corresponding 64-bit IEEE values in the first double;
++       the second is ignored.  Manipulate only the first double.  */
++    #undef NWORDS
++    #define NWORDS \
++      ((sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
++#endif
++
+     memory_long_double m;
+     m.value = zerol / zerol;
+ # if LDBL_EXPBIT0_BIT > 0
diff --git a/grep.changes b/grep.changes
index 7bd04fe..a60f321 100644
--- a/grep.changes
+++ b/grep.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Fri Dec 20 01:36:52 UTC 2013 - uweigand@de.ibm.com
+
+- grep-gnulib-ppc64le.patch: Fix imported gnulib long double math
+  tests for little-endian PowerPC.
+
 -------------------------------------------------------------------
 Wed Dec 11 20:36:13 UTC 2013 - andreas.stieger@gmx.de
 
diff --git a/grep.spec b/grep.spec
index 3da8f85..366bb59 100644
--- a/grep.spec
+++ b/grep.spec
@@ -34,6 +34,8 @@ Group:          Productivity/Text/Utilities
 Source0:        http://ftp.gnu.org/gnu/%{name}/%{name}-%{version}.tar.xz
 Source2:        http://ftp.gnu.org/gnu/%{name}/%{name}-%{version}.tar.xz.sig
 Source3:        http://savannah.gnu.org/project/memberlist-gpgkeys.php?group=grep&download=1#/%{name}.keyring
+# Fix imported gnulib long double math tests for little-endian PowerPC
+Patch1:         grep-gnulib-ppc64le.patch
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 
 %description
@@ -43,6 +45,7 @@ the matching lines.
 
 %prep
 %setup -q
+%patch1 -p1
 %if 0%{?suse_version} < 1120
 echo "ac_cv_search_pcre_compile=\${ac_cv_search_pcre_compile=%{_libdir}/libpcre.a}" >config.cache
 %endif