diff --git a/include/etl/bit.h b/include/etl/bit.h
index 1c9fa805..05ea0769 100644
--- a/include/etl/bit.h
+++ b/include/etl/bit.h
@@ -50,7 +50,6 @@ namespace etl
   /// bit_cast
   //***************************************************************************
   template <typename TDestination, typename TSource>
-  ETL_CONSTEXPR14
   typename etl::enable_if<(sizeof(TDestination) == sizeof(TSource)) &&
                            etl::is_trivially_copyable<TSource>::value &&
                            etl::is_trivially_copyable<TDestination>::value, TDestination>::type
@@ -58,19 +57,7 @@ namespace etl
   {
     TDestination destination;
 
-#if defined(__has_builtin)
-  #if __has_builtin(__builtin_memcpy)
-    #define ETL_USE_BUILTIN_MEMCPY
-  #endif
-#endif
-
-#if defined(ETL_USE_BUILTIN_MEMCPY)
-    __builtin_memcpy(&destination, &source, sizeof(TDestination));
-#else
     memcpy(&destination, &source, sizeof(TDestination));
-#endif
-
-#undef ETL_USE_BUILTIN_MEMCPY
 
     return destination;
   }