diff --git a/src/babylon/logging/log_severity.h b/src/babylon/logging/log_severity.h
index 5ae7f0c..e6d4454 100644
--- a/src/babylon/logging/log_severity.h
+++ b/src/babylon/logging/log_severity.h
@@ -18,8 +18,8 @@ class LogSeverity {
   inline constexpr LogSeverity() noexcept = default;
   inline constexpr LogSeverity(LogSeverity&&) noexcept = default;
   inline constexpr LogSeverity(const LogSeverity&) noexcept = default;
-  inline constexpr LogSeverity& operator=(LogSeverity&&) noexcept = default;
-  inline constexpr LogSeverity& operator=(const LogSeverity&) noexcept =
+  inline CONSTEXPR_SINCE_CXX14 LogSeverity& operator=(LogSeverity&&) noexcept = default;
+  inline CONSTEXPR_SINCE_CXX14 LogSeverity& operator=(const LogSeverity&) noexcept =
       default;
   inline ~LogSeverity() noexcept = default;