diff --git a/tests/topotests/bgp_as_override/test_bgp_as_override.py b/tests/topotests/bgp_as_override/test_bgp_as_override.py
index dbbdf2c88f..ab22b4936f 100644
--- a/tests/topotests/bgp_as_override/test_bgp_as_override.py
+++ b/tests/topotests/bgp_as_override/test_bgp_as_override.py
@@ -27,7 +27,7 @@ pytestmark = [pytest.mark.bgpd]
 
 
 def build_topo(tgen):
-    for routern in range(1, 7):
+    for routern in range(1, 5):
         tgen.add_router("r{}".format(routern))
 
     switch = tgen.add_switch("s1")