diff --git a/include/fmt/ranges.h b/include/fmt/ranges.h
index 7bbc1336..89c1ae01 100644
--- a/include/fmt/ranges.h
+++ b/include/fmt/ranges.h
@@ -774,8 +774,8 @@ template <typename Container> struct all {
 }  // namespace detail
 
 FMT_EXPORT
-template <typename T> struct is_container_adaptor:  detail::is_container_adaptor_like<T> {};
-
+template <typename T>
+struct is_container_adaptor : detail::is_container_adaptor_like<T> {};
 
 template <typename T, typename Char>
 struct formatter<