diff --git a/libs/util/include/psemek/util/mutexed.hpp b/libs/util/include/psemek/util/mutexed.hpp
index 9427518e..da0373b2 100644
--- a/libs/util/include/psemek/util/mutexed.hpp
+++ b/libs/util/include/psemek/util/mutexed.hpp
@@ -38,7 +38,7 @@ namespace psemek::util
 			value_ = std::move(new_value);
 		}
 
-		T exchange(T && new_value) const
+		T exchange(T && new_value)
 		{
 			std::lock_guard lock{mutex_};
 			std::swap(value_, new_value);