diff --git a/include/boost/predef/hardware/simd/arm/neon.h b/include/boost/predef/hardware/simd/arm/neon.h
index df454d9..550e99e 100644
--- a/include/boost/predef/hardware/simd/arm/neon.h
+++ b/include/boost/predef/hardware/simd/arm/neon.h
@@ -26,11 +26,9 @@ http://www.boost.org/LICENSE_1_0.txt)
      ]
  */
 
-#define BOOST_HW_SIMD_ARM_NEON BOOST_VERSION_NUMBER_NOT_AVAILABLE
+#define BOOST_HW_SIMD_ARM_NEON BOOST_VERSION_NUMBER(1, 0, 0)
 
 #if defined(__ARM_NEON__) || defined(__aarch64__) || defined (_M_ARM)
-#   undef BOOST_HW_SIMD_ARM_NEON
-#   define BOOST_HW_SIMD_ARM_NEON BOOST_VERSION_NUMBER(1, 0, 0)
 #   define BOOST_HW_SIMD_ARM_NEON_AVAILABLE
 #endif