diff --git a/m-atomic.h b/m-atomic.h
index 2892f1ae..b2d68e21 100644
--- a/m-atomic.h
+++ b/m-atomic.h
@@ -115,7 +115,7 @@ using std::atomic_flag_clear_explicit;
     m_mutex_t  __lock;                          \
   }
 
-/* Even memory order is defined, only the strongest constraint exist */
+/* Even memory order is defined, only the strongest constraint is used */
 typedef enum {
   memory_order_relaxed,
   memory_order_consume,