diff --git a/src/optional.cpp b/src/optional.cpp
index 0805ca53..fde071c9 100644
--- a/src/optional.cpp
+++ b/src/optional.cpp
@@ -14,11 +14,11 @@ namespace std  // purposefully not using versioning namespace
 
 #ifdef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
 
-bad_optional_access::~bad_optional_access() {}
+bad_optional_access::~bad_optional_access() _NOEXCEPT {}
 
 #else
 
-bad_optional_access::~bad_optional_access() = default;
+bad_optional_access::~bad_optional_access() _NOEXCEPT = default;
 
 #endif