diff --git a/src/utils.py b/src/utils.py
index a366955..dfea4ea 100644
--- a/src/utils.py
+++ b/src/utils.py
@@ -60,15 +60,19 @@ def big_cell(generator,symGenerator,a,b,c,alpha,beta,gamma,nA,nB,nC):
                 r1 = np.array(coords[i][:3])
                 r2 = np.array(coords[j][:3])
                 r12 = r1-r2
+                da = np.sqrt(r12[0]**2+r12[1]**2+r12[2]**2)
                 r12 = r12 - np.round(r12)
+                db = da - np.sqrt(r12[0]**2+r12[1]**2+r12[2]**2)
                 r12 = np.matmul(fracToCart,r12)
                 d = np.sqrt(r12[0]**2+r12[1]**2+r12[2]**2)
 
-                if(d<1e-5):
+                if(d<1e-2):
                     # We check if we don't already want to delete this atom
                     if j not in toDel:
                         toDel.append(j)
 
+    toDel = sorted(toDel)
+
     # We delete the atoms in the list
     for i in range(len(toDel)):
         coords.pop(toDel[i]-i)
@@ -101,6 +105,7 @@ def big_cell(generator,symGenerator,a,b,c,alpha,beta,gamma,nA,nB,nC):
         rxyz = np.matmul(fracToCart,r)
         coords.append([rxyz[0],rxyz[1],rxyz[2],at[3],'C'])
 
+
     # Returns the list of the atoms [x,y,z,label,second_label]
     return coords