diff --git a/src/compute_aggregate_atom.cpp b/src/compute_aggregate_atom.cpp
index e68062b73e..54da23c302 100644
--- a/src/compute_aggregate_atom.cpp
+++ b/src/compute_aggregate_atom.cpp
@@ -110,6 +110,11 @@ void ComputeAggregateAtom::compute_peratom()
     vector_atom = aggregateID;
   }
 
+  // communicate coords for ghost atoms if box can change, e.g. fix deform
+  // this ensures ghost atom coords are current
+
+  comm->forward_comm();
+
   // invoke full neighbor list (will copy or build if necessary)
   // on the first step of a run, set preflag to one in neighbor->build_one(...)
 
diff --git a/src/compute_cluster_atom.cpp b/src/compute_cluster_atom.cpp
index 0d60b8b993..ba0f263747 100644
--- a/src/compute_cluster_atom.cpp
+++ b/src/compute_cluster_atom.cpp
@@ -100,6 +100,11 @@ void ComputeClusterAtom::compute_peratom()
     vector_atom = clusterID;
   }
 
+  // communicate coords for ghost atoms if box can change, e.g. fix deform
+  // this ensures ghost atom coords are current
+
+  comm->forward_comm();
+
   // invoke full neighbor list (will copy or build if necessary)
   // on the first step of a run, set preflag to one in neighbor->build_one(...)