diff --git a/344.patch b/344.patch
new file mode 100644
index 0000000..209d7e7
--- /dev/null
+++ b/344.patch
@@ -0,0 +1,24 @@
+From a98771f469cc02145fd315b9d801847a43b9348f Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Robert-Andr=C3=A9=20Mauchin?=
+ <30413512+eclipseo@users.noreply.github.com>
+Date: Wed, 18 Aug 2021 20:51:04 +0200
+Subject: [PATCH] Cast __ppc_get_timebase_freq to double
+
+Fix #343
+---
+ hwy/nanobenchmark.cc | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/hwy/nanobenchmark.cc b/hwy/nanobenchmark.cc
+index a932e10..9a2e54c 100644
+--- a/hwy/nanobenchmark.cc
++++ b/hwy/nanobenchmark.cc
+@@ -400,7 +400,7 @@ double NominalClockRate() {
+ 
+ double InvariantTicksPerSecond() {
+ #if HWY_ARCH_PPC
+-  return __ppc_get_timebase_freq();
++  return double(__ppc_get_timebase_freq());
+ #elif HWY_ARCH_X86
+   // We assume the TSC is invariant; it is on all recent Intel/AMD CPUs.
+   return NominalClockRate();
diff --git a/highway.spec b/highway.spec
index 06817d5..db6b05e 100644
--- a/highway.spec
+++ b/highway.spec
@@ -13,6 +13,8 @@ Summary:        Efficient and performance-portable SIMD
 License:        ASL 2.0
 URL:            https://github.com/google/highway
 Source0:        %url/archive/%{version}/%{name}-%{version}.tar.gz
+# https://github.com/google/highway/issues/343
+Patch0:         https://github.com/google/highway/pull/344.patch
 
 BuildRequires:  cmake
 BuildRequires:  gcc-c++