diff --git a/include/fast_float/constexpr_feature_detect.h b/include/fast_float/constexpr_feature_detect.h
index 8d409df..6999538 100644
--- a/include/fast_float/constexpr_feature_detect.h
+++ b/include/fast_float/constexpr_feature_detect.h
@@ -29,11 +29,12 @@
 #define FASTFLOAT_CONSTEVAL FASTFLOAT_CONSTEXPR14
 #endif
 
-#if defined(__cpp_lib_byteswap)
-#define FASTFLOAT_HAS_BYTESWAP 1
-#else
+// Try to fix precision error in x86 platform
+//#if defined(__cpp_lib_byteswap)
+//#define FASTFLOAT_HAS_BYTESWAP 1
+//#else
 #define FASTFLOAT_HAS_BYTESWAP 0
-#endif
+//#endif
 
 #if defined(__cpp_if_constexpr) && __cpp_if_constexpr >= 201606L
 #define FASTFLOAT_IF_CONSTEXPR17(x) if constexpr (x)