diff --git a/src/extension/ChronoController.hpp b/src/extension/ChronoController.hpp
index 812c46c8..28ee8e90 100644
--- a/src/extension/ChronoController.hpp
+++ b/src/extension/ChronoController.hpp
@@ -116,7 +116,7 @@ namespace extension {
 
                     } break;
                     case message::TimeTravel::Action::NEAREST: {
-                        clock::time_point nearest =
+                        const clock::time_point nearest =
                             tasks.empty() ? travel.target
                                           : std::min(travel.target, std::min_element(tasks.begin(), tasks.end())->time);
                         clock::set_clock(nearest, travel.rtf);