diff --git a/include/fmt/base.h b/include/fmt/base.h
index 9d02f25a..61115d9f 100644
--- a/include/fmt/base.h
+++ b/include/fmt/base.h
@@ -394,7 +394,7 @@ inline auto map(uint128_opt) -> monostate { return {}; }
 #endif
 
 #ifndef FMT_USE_BITINT
-#  define FMT_USE_BITINT (FMT_CLANG_VERSION >= 1400)
+#  define FMT_USE_BITINT (FMT_CLANG_VERSION >= 1500)
 #endif
 
 #if FMT_USE_BITINT