diff --git a/Core/src/Utilities/TrackHelpers.cpp b/Core/src/Utilities/TrackHelpers.cpp
index 11a2dfd7eae..a20350628ac 100644
--- a/Core/src/Utilities/TrackHelpers.cpp
+++ b/Core/src/Utilities/TrackHelpers.cpp
@@ -35,6 +35,6 @@ class TrackExtrapolationErrorCategory : public std::error_category {
 }  // namespace
 
 std::error_code Acts::make_error_code(Acts::TrackExtrapolationError e) {
-  static TrackExtrapolationErrorCategory c;
+  static const TrackExtrapolationErrorCategory c;
   return {static_cast<int>(e), c};
 }