diff --git a/src/napari_stress/_stress/sph_func_SPB.py b/src/napari_stress/_stress/sph_func_SPB.py
index ed11cb18..9afbcef3 100644
--- a/src/napari_stress/_stress/sph_func_SPB.py
+++ b/src/napari_stress/_stress/sph_func_SPB.py
@@ -270,6 +270,7 @@ def Un_Flatten_Coef_Vec(coefficient_vector, basis_degree):
 
     return coefficient_matrix
 
+
 # Gives L_1 Integral on SPHERE pullback:
 def L1_Integral(f_quad_vals, lbdv):
     L1_Int = 0