diff --git a/common.jl b/common.jl
index b9d912d..b7035db 100644
--- a/common.jl
+++ b/common.jl
@@ -47,7 +47,7 @@ which_index(s::system, dim::Int, coord::Int)::Int = (dim - 1) * (s.n - 1) + coor
 function nearest(s::system, Δk::Int)::Int
     # TODO: Optimize
     while true
-        if Δk > s.N ÷ 2
+        if Δk > (s.N ÷ 2 - 1)
             Δk -= s.N
         elseif Δk < -s.N ÷ 2
             Δk += s.N
@@ -63,7 +63,7 @@ function calculate_Vs(s::system{T}, V_twobody::Function, ϕ::T, n_image::Int)::A
     images = collect.(Iterators.product(fill(-n_image:n_image, s.d)...)) # TODO: Learn how to use tuples instead of vectors
     Vs = zeros(Complex{T}, fill(s.N, s.d * (s.n - 1))...)
     Threads.@threads for i in CartesianIndices(Vs)
-        xs = reshape(collect(Tuple(i)), s.n - 1, s.d) .- (s.N ÷ 2 - 1)
+        xs = reshape(collect(Tuple(i)), s.n - 1, s.d) .- (s.N ÷ 2 + 1)
         rs = s.invU * xs
         for p1 in 1:s.n
             for p2 in 1:(p1 - 1)