diff --git a/src/atom_vec_hybrid.cpp b/src/atom_vec_hybrid.cpp
index 774e2b3dbc..f3307f5c93 100644
--- a/src/atom_vec_hybrid.cpp
+++ b/src/atom_vec_hybrid.cpp
@@ -348,7 +348,7 @@ int AtomVecHybrid::unpack_exchange(double *buf)
 
   int m = 0;
   for (int k = 0; k < nstyles; k++) {
-    m += styles[k]->unpack_exchange(buf);
+    m += styles[k]->unpack_exchange(&buf[m]);
     atom->nlocal--;
   }