diff --git a/src/solvers/dgsem_tree/subcell_limiters_2d.jl b/src/solvers/dgsem_tree/subcell_limiters_2d.jl
index e1d45f8608d..3d272359fe4 100644
--- a/src/solvers/dgsem_tree/subcell_limiters_2d.jl
+++ b/src/solvers/dgsem_tree/subcell_limiters_2d.jl
@@ -37,6 +37,7 @@ function (limiter::SubcellLimiterIDP)(u::AbstractArray{<:Any, 4}, semi, dg::DGSE
                                       dt;
                                       kwargs...)
     @unpack alpha = limiter.cache.subcell_limiter_coefficients
+    # TODO: Do not abuse `reset_du!` but maybe implement a generic `set_zero!`
     @trixi_timeit timer() "reset alpha" reset_du!(alpha, dg, semi.cache)
 
     if limiter.local_minmax