diff --git a/include/fmt/format.h b/include/fmt/format.h
index 0d3ecd1b..6c8cf153 100644
--- a/include/fmt/format.h
+++ b/include/fmt/format.h
@@ -3544,17 +3544,24 @@ FMT_CONSTEXPR internal::udl_arg<wchar_t> operator"" _a(const wchar_t* s,
 #endif  // FMT_USE_USER_DEFINED_LITERALS
 FMT_END_NAMESPACE
 
-#define FMT_STRING_IMPL(s, ...)                                                    \
-  []() -> fmt::basic_string_view<fmt::remove_cvref_t<decltype(*s)>> {              \
-    /* Use a macro-like name to avoid shadowing warnings. */                       \
-    struct FMT_COMPILE_STRING : fmt::compile_string {                              \
-      __VA_ARGS__ FMT_CONSTEXPR                                                    \
-      operator fmt::basic_string_view<fmt::remove_cvref_t<decltype(*s)>>() const { \
-        /* FMT_STRING only accepts string literals. */                             \
-        return fmt::internal::literal_to_view(s);                                  \
-      }                                                                            \
-    };                                                                             \
-    return FMT_COMPILE_STRING();                                                   \
+#if FMT_GCC_VERSION >= 900
+#  define FMT_STRING_RESULT(s)   ()->fmt::basic_string_view<fmt::remove_cvref_t<decltype(*s)>>
+#else
+#  define FMT_STRING_RESULT(s)
+#endif
+
+#define FMT_STRING_IMPL(s, ...)                              \
+  [] FMT_STRING_RESULT(s) {                                  \
+    /* Use a macro-like name to avoid shadowing warnings. */ \
+    struct FMT_COMPILE_STRING : fmt::compile_string {        \
+      using char_type = fmt::remove_cvref_t<decltype(*s)>;   \
+      __VA_ARGS__ FMT_CONSTEXPR                              \
+      operator fmt::basic_string_view<char_type>() const {   \
+        /* FMT_STRING only accepts string literals. */       \
+        return fmt::internal::literal_to_view(s);            \
+      }                                                      \
+    };                                                       \
+    return FMT_COMPILE_STRING();                             \
   }()
 
 /**