diff --git a/qt5-qtbase.spec b/qt5-qtbase.spec
index 12b5872..6f466ac 100644
--- a/qt5-qtbase.spec
+++ b/qt5-qtbase.spec
@@ -27,6 +27,8 @@ Patch2: qtbase-multilib_optflags.patch
 # https://bugreports.qt-project.org/browse/QTBUG-27195
 # NEEDS REBASE
 Patch50: qt5-poll.patch
+# fix ppc64 build
+Patch51: qtbase-opensource-src-5.1.1-ppc64.patch
 
 ##upstream patches
 
@@ -156,6 +158,7 @@ Qt5 libraries used for drawing widgets and OpenGL items.
 rm -fv mkspecs/linux-g++*/qmake.conf.multilib-optflags
 
 #patch50 -p1 -b .poll
+%patch51 -p1 -b .ppc64
 
 # drop -fexceptions from $RPM_OPT_FLAGS
 RPM_OPT_FLAGS=`echo $RPM_OPT_FLAGS | sed 's|-fexceptions||g'`
diff --git a/qtbase-opensource-src-5.1.1-ppc64.patch b/qtbase-opensource-src-5.1.1-ppc64.patch
new file mode 100644
index 0000000..97e7a86
--- /dev/null
+++ b/qtbase-opensource-src-5.1.1-ppc64.patch
@@ -0,0 +1,21 @@
+diff -up qtbase-opensource-src-5.1.1/src/3rdparty/sha3/KeccakF-1600-opt64.c.ppc64 qtbase-opensource-src-5.1.1/src/3rdparty/sha3/KeccakF-1600-opt64.c
+--- qtbase-opensource-src-5.1.1/src/3rdparty/sha3/KeccakF-1600-opt64.c.ppc64	2013-08-25 13:03:42.000000000 -0500
++++ qtbase-opensource-src-5.1.1/src/3rdparty/sha3/KeccakF-1600-opt64.c	2013-09-06 22:29:03.687899748 -0500
+@@ -324,7 +324,7 @@ static void KeccakPermutation(unsigned c
+     KeccakPermutationOnWords((UINT64*)state);
+ }
+ 
+-#if 0 // Unused in the Qt configuration
++#if 1 // Unused in the Qt configuration
+ static void fromBytesToWord(UINT64 *word, const UINT8 *bytes)
+ {
+     unsigned int i;
+@@ -445,7 +445,7 @@ static void KeccakAbsorb(unsigned char *
+ #endif
+ }
+ 
+-#if 0 // Unused in the Qt configuration
++#if 1 // Unused in the Qt configuration
+ static void fromWordToBytes(UINT8 *bytes, const UINT64 word)
+ {
+     unsigned int i;