diff --git a/include/boost/optional/detail/optional_trivially_copyable_base.hpp b/include/boost/optional/detail/optional_trivially_copyable_base.hpp
index e8eff70..8d98a84 100644
--- a/include/boost/optional/detail/optional_trivially_copyable_base.hpp
+++ b/include/boost/optional/detail/optional_trivially_copyable_base.hpp
@@ -9,7 +9,7 @@
 // You are welcome to contact the author at:
 //  akrzemi1@gmail.com
 
-// trivilally-copyable version of the storage
+// trivially-copyable version of the storage
 
 template<class T>
 class tc_optional_base : public optional_tag