diff --git a/engine/src/Storyboard/ByEntityCondition/TimeHeadwayCondition_impl.cpp b/engine/src/Storyboard/ByEntityCondition/TimeHeadwayCondition_impl.cpp
index e5d4d5917e3885fd69ddc749a1ae40175363cbd3..1dcd32d5d53d91d7621c4fddb4ebdc97adfa8cb6 100644
--- a/engine/src/Storyboard/ByEntityCondition/TimeHeadwayCondition_impl.cpp
+++ b/engine/src/Storyboard/ByEntityCondition/TimeHeadwayCondition_impl.cpp
@@ -20,7 +20,7 @@ namespace OpenScenarioEngine::v1_3
 namespace detail
 {
 // Normalize angle to [-π, π] range
-constexpr units::angle::radian_t NormalizeAngle(units::angle::radian_t angle) noexcept
+units::angle::radian_t NormalizeAngle(units::angle::radian_t angle) noexcept
 {
   constexpr auto pi = units::angle::radian_t{M_PI};
   constexpr auto two_pi = 2.0 * pi;