diff --git a/libs/geom/include/psemek/geom/vector.hpp b/libs/geom/include/psemek/geom/vector.hpp
index 2c92f7ac..123175ba 100644
--- a/libs/geom/include/psemek/geom/vector.hpp
+++ b/libs/geom/include/psemek/geom/vector.hpp
@@ -370,7 +370,7 @@ namespace psemek::geom
 		// sin(x) Taylor series is less than the minimum value representable by T
 		static auto const threshold = std::pow(6 * std::numeric_limits<T>::min(), T{1}/T{3});
 
-		auto const omega = std::acos(dot(normalized(v0), normalized(v1)));
+		auto const omega = angle(normalized(v0), normalized(v1));
 
 		// NB: the case of omega ~ pi is ambiguous and isn't handled in any special way