diff --git a/src/PERI/atom_vec_peri.cpp b/src/PERI/atom_vec_peri.cpp
index d85853d114..ee36eb6db8 100644
--- a/src/PERI/atom_vec_peri.cpp
+++ b/src/PERI/atom_vec_peri.cpp
@@ -240,7 +240,7 @@ int AtomVecPeri::pack_comm_hybrid(int n, int *list, double *buf)
   m = 0;
   for (i = 0; i < n; i++) {
     j = list[i];
-    buf[m++] = s0[i];
+    buf[m++] = s0[j];
   }
   return m;
 }