diff --git a/src/space.c b/src/space.c
index e2bb6249bdcaa48110ab127b0705237588751c29..82f369a501bc1be13d27d8096acc8a57a004a580 100644
--- a/src/space.c
+++ b/src/space.c
@@ -206,6 +206,7 @@ void space_rebuild_recycle_mapper(void *map_data, int num_elements,
     c->end_force = NULL;
     c->hydro.drift = NULL;
     c->grav.drift = NULL;
+    c->grav.drift_out = NULL;
     c->hydro.cooling = NULL;
     c->sourceterms = NULL;
     c->grav.long_range = NULL;