diff --git a/ompi/communicator/comm_init.c b/ompi/communicator/comm_init.c
index 46148901f52..e348fb364d3 100644
--- a/ompi/communicator/comm_init.c
+++ b/ompi/communicator/comm_init.c
@@ -447,6 +447,7 @@ static void ompi_comm_construct(ompi_communicator_t* comm)
     comm->c_remote_group = NULL;
     comm->error_handler  = NULL;
     comm->c_pml_comm     = NULL;
+    comm->bsend_buffer   = NULL;
     comm->c_topo         = NULL;
     comm->c_coll         = NULL;
     comm->c_nbc_tag      = MCA_COLL_BASE_TAG_NONBLOCKING_BASE;
diff --git a/ompi/instance/instance.c b/ompi/instance/instance.c
index 245b4b4f7d1..2596c1decf5 100644
--- a/ompi/instance/instance.c
+++ b/ompi/instance/instance.c
@@ -112,6 +112,7 @@ static void ompi_instance_construct (ompi_instance_t *instance)
     instance->i_keyhash = NULL;
     OBJ_CONSTRUCT(&instance->s_lock, opal_mutex_t);
     instance->errhandler_type = OMPI_ERRHANDLER_TYPE_INSTANCE;
+    instance->bsend_buffer = NULL;
 }
 
 static void ompi_instance_destruct(ompi_instance_t *instance)