1 files changed, 6 insertions, 2 deletions
diff --git a/absl/types/bad_optional_access.cc b/absl/types/bad_optional_access.cc
index c5508678..2dc74d3b 100644
--- a/absl/types/bad_optional_access.cc
+++ b/absl/types/bad_optional_access.cc
@@ -14,13 +14,15 @@
 
 #include "absl/types/bad_optional_access.h"
 
+#ifndef ABSL_HAVE_STD_OPTIONAL
+
 #include <cstdlib>
 
 #include "absl/base/config.h"
 #include "absl/base/internal/raw_logging.h"
 
 namespace absl {
-inline namespace lts_2018_06_20 {
+inline namespace lts_2018_12_18 {
 
 bad_optional_access::~bad_optional_access() = default;
 
@@ -40,5 +42,7 @@ void throw_bad_optional_access() {
 }
 
 }  // namespace optional_internal
-}  // inline namespace lts_2018_06_20
+}  // inline namespace lts_2018_12_18
 }  // namespace absl
+
+#endif  // ABSL_HAVE_STD_OPTIONAL