diff --git a/internal/overflow.cc b/internal/overflow.cc
index 8cc209384..79d1f24ad 100644
--- a/internal/overflow.cc
+++ b/internal/overflow.cc
@@ -32,7 +32,7 @@ constexpr int64_t kInt32Min = std::numeric_limits<int32_t>::lowest();
 constexpr int64_t kInt64Max = std::numeric_limits<int64_t>::max();
 constexpr int64_t kInt64Min = std::numeric_limits<int64_t>::lowest();
 constexpr uint64_t kUint32Max = std::numeric_limits<uint32_t>::max();
-ABSL_ATTRIBUTE_UNUSED constexpr uint64_t kUint64Max =
+[[maybe_unused]] constexpr uint64_t kUint64Max =
     std::numeric_limits<uint64_t>::max();
 constexpr uint64_t kUintToIntMax = static_cast<uint64_t>(kInt64Max);
 constexpr double kDoubleToIntMax = static_cast<double>(kInt64Max);