diff --git a/include/fmt/core.h b/include/fmt/core.h
index 84f878de..ed4bc45a 100644
--- a/include/fmt/core.h
+++ b/include/fmt/core.h
@@ -39,12 +39,6 @@
 # define FMT_HAS_FEATURE(x) 0
 #endif
 
-#ifdef __has_builtin
-# define FMT_HAS_BUILTIN(x) __has_builtin(x)
-#else
-# define FMT_HAS_BUILTIN(x) 0
-#endif
-
 #ifdef __GNUC__
 # define FMT_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
 #endif
diff --git a/include/fmt/format.h b/include/fmt/format.h
index 05cfaebd..8be5f0e8 100644
--- a/include/fmt/format.h
+++ b/include/fmt/format.h
@@ -48,6 +48,12 @@
 # include <iterator>
 #endif
 
+#ifdef __has_builtin
+# define FMT_HAS_BUILTIN(x) __has_builtin(x)
+#else
+# define FMT_HAS_BUILTIN(x) 0
+#endif
+
 #ifdef __GNUC__
 # if FMT_GCC_VERSION >= 406
 #  pragma GCC diagnostic push