diff --git a/include/shared_mutex b/include/shared_mutex
index b0802ae55..ff36ee6ac 100644
--- a/include/shared_mutex
+++ b/include/shared_mutex
@@ -177,7 +177,7 @@ class _LIBCPP_TYPE_VIS _LIBCPP_AVAILABILITY_SHARED_MUTEX shared_mutex
 {
     __shared_mutex_base __base;
 public:
-    shared_mutex() : __base() {}
+    _LIBCPP_INLINE_VISIBILITY shared_mutex() : __base() {}
     _LIBCPP_INLINE_VISIBILITY ~shared_mutex() = default;
 
     shared_mutex(const shared_mutex&) = delete;