diff --git a/src/space.c b/src/space.c
index e779bc9dae64be41d0a9cde81ebf82c7ed0c7031..ba49a64c953029672085e973aa3b53234195664e 100644
--- a/src/space.c
+++ b/src/space.c
@@ -827,7 +827,7 @@ struct task *space_addtask ( struct space *s , int type , int subtype , int flag
     
     /* Add an index for it. */
     // lock_lock( &s->lock );
-    s->tasks_ind[ atomic_inc( s->nr_tasks ) ] = ind;
+    s->tasks_ind[ atomic_inc( &s->nr_tasks ) ] = ind;
     // lock_unlock_blind( &s->lock );
     
     /* Return a pointer to the new task. */