diff --git a/xsimd.spec b/xsimd.spec
index 41dd07e..c9bc1a9 100644
--- a/xsimd.spec
+++ b/xsimd.spec
@@ -10,6 +10,12 @@ Source0:        %{github}/archive/%{version}/%{name}-%{version}.tar.gz
 BuildRequires:  cmake
 BuildRequires:  gcc-c++
 BuildRequires:  gtest-devel
+BuildRequires:  gmock-devel
+
+%ifarch %{arm}
+# Only used for testing, as it's a header-only package.
+%global optflags %(echo %{optflags} -mfpu=neon)
+%endif
 
 %ifarch %{arm}
 # Only used for testing, as it's a header-only package.