diff --git a/test/regress_bufferevent.c b/test/regress_bufferevent.c
index ea64202a..a87e02ed 100644
--- a/test/regress_bufferevent.c
+++ b/test/regress_bufferevent.c
@@ -233,10 +233,11 @@ static lock_wrapper *lu_find(void *lock_)
 
 static void *trace_lock_alloc(unsigned locktype)
 {
+	void *lock;
 	++lu_base.nr_locks;
 	lu_base.locks = realloc(lu_base.locks,
 		sizeof(lock_wrapper) * lu_base.nr_locks);
-	void *lock = lu_base.cbs.alloc(locktype);
+	lock = lu_base.cbs.alloc(locktype);
 	lu_base.locks[lu_base.nr_locks - 1] = (lock_wrapper){ lock, ALLOC, 0 };
 	return lock;
 }