diff --git a/src/const.h b/src/const.h
index 4b70c76..3fcb3a9 100644
--- a/src/const.h
+++ b/src/const.h
@@ -13,7 +13,7 @@ inline constexpr auto hash_djb2a(const std::string_view sv) {
   return hash;
 }
 
-inline constexpr auto operator"" _sh(const char* str, size_t len) {
+inline constexpr auto operator""_sh(const char* str, size_t len) {
   return hash_djb2a(std::string_view{str, len});
 }