diff --git a/include/magic_enum.hpp b/include/magic_enum.hpp
index 5087e3e..6280aa6 100644
--- a/include/magic_enum.hpp
+++ b/include/magic_enum.hpp
@@ -42,6 +42,11 @@
 #include <type_traits>
 #include <utility>
 
+// Checks magic_enum compiler compatibility.
+#if defined(__clang__) || defined(__GNUC__) && __GNUC__>= 9 || defined(_MSC_VER)
+#  define MAGIC_ENUM_SUPPORTED 1
+#endif
+
 // Enum value must be greater or equals than MAGIC_ENUM_RANGE_MIN. By default MAGIC_ENUM_RANGE_MIN = -128.
 // If need another min range for all enum types by default, redefine the macro MAGIC_ENUM_RANGE_MIN.
 #if !defined(MAGIC_ENUM_RANGE_MIN)
@@ -56,10 +61,6 @@
 
 namespace magic_enum {
 
-#if defined(__clang__) || defined(__GNUC__) && __GNUC__>= 9 || defined(_MSC_VER)
-#  define MAGIC_ENUM_SUPPORTED 1
-#endif
-
 // Enum value must be in range [MAGIC_ENUM_RANGE_MIN, MAGIC_ENUM_RANGE_MAX]. By default MAGIC_ENUM_RANGE_MIN = -128, MAGIC_ENUM_RANGE_MAX = 128.
 // If need another range for all enum types by default, redefine the macro MAGIC_ENUM_RANGE_MIN and MAGIC_ENUM_RANGE_MAX.
 // If need another range for specific enum type, add specialization enum_range for necessary enum type.