1 files changed, 1 insertions, 0 deletions

diff --git a/src/testbed/testbed_api_topology.c b/src/testbed/testbed_api_topology.c
index 4279299eb..84202ec8c 100644
--- a/src/testbed/testbed_api_topology.c
+++ b/src/testbed/testbed_api_topology.c
@@ -349,6 +349,7 @@ GNUNET_TESTBED_overlay_configure_topology_va (void *op_cls,
                                          &oprelease_overlay_configure_topology);
   GNUNET_TESTBED_operation_queue_insert_
       (c->opq_parallel_topology_config_operations, op);
+  GNUNET_TESTBED_operation_begin_wait_ (op);
   return op;
 }