diff --git a/src/critter.cpp b/src/critter.cpp
index 83d690ae..75f12a3c 100644
--- a/src/critter.cpp
+++ b/src/critter.cpp
@@ -142,7 +142,8 @@ CORRADE_ALWAYS_INLINE
 bool update_movement_2(size_t& i, critter& C, const anim_def& info, uint8_t nsteps)
 {
     constexpr auto vec = rotation_to_vec(r);
-    return update_movement_body<r, vec.x(), vec.y(), MultiStep>(i, C, info, nsteps);
+    constexpr auto vx = vec.x(), vy = vec.y();
+    return update_movement_body<r, vx, vy, MultiStep>(i, C, info, nsteps);
 }
 
 template<rotation r>