diff --git a/tests/scripts/thread-cert/Cert_9_2_10_PendingPartition.py b/tests/scripts/thread-cert/Cert_9_2_10_PendingPartition.py
index 7d09cd774..65748ee49 100755
--- a/tests/scripts/thread-cert/Cert_9_2_10_PendingPartition.py
+++ b/tests/scripts/thread-cert/Cert_9_2_10_PendingPartition.py
@@ -76,14 +76,12 @@ class Cert_9_2_10_PendingPartition(unittest.TestCase):
         self.nodes[ED1].set_mode('rsn')
         self.nodes[ED1].add_whitelist(self.nodes[ROUTER1].get_addr64())
         self.nodes[ED1].enable_whitelist()
-        self.nodes[ED1].set_router_selection_jitter(1)
 
         self.nodes[SED1].set_active_dataset(15, channel=CHANNEL_INIT, panid=PANID_INIT)
         self.nodes[SED1].set_mode('s')
         self.nodes[SED1].add_whitelist(self.nodes[ROUTER1].get_addr64())
         self.nodes[SED1].enable_whitelist()
         self.nodes[SED1].set_timeout(3)
-        self.nodes[SED1].set_router_selection_jitter(1)
 
     def tearDown(self):
         for node in list(self.nodes.values()):
diff --git a/tests/scripts/thread-cert/Cert_9_2_11_MasterKey.py b/tests/scripts/thread-cert/Cert_9_2_11_MasterKey.py
index 77cbda0e8..0ee8c957f 100755
--- a/tests/scripts/thread-cert/Cert_9_2_11_MasterKey.py
+++ b/tests/scripts/thread-cert/Cert_9_2_11_MasterKey.py
@@ -75,14 +75,12 @@ class Cert_9_2_11_MasterKey(unittest.TestCase):
         self.nodes[ED1].set_mode('rsn')
         self.nodes[ED1].add_whitelist(self.nodes[ROUTER1].get_addr64())
         self.nodes[ED1].enable_whitelist()
-        self.nodes[ED1].set_router_selection_jitter(1)
 
         self.nodes[SED1].set_active_dataset(10, channel=CHANNEL_INIT, panid=PANID_INIT, master_key=KEY1)
         self.nodes[SED1].set_mode('s')
         self.nodes[SED1].add_whitelist(self.nodes[ROUTER1].get_addr64())
         self.nodes[SED1].enable_whitelist()
         self.nodes[SED1].set_timeout(3)
-        self.nodes[SED1].set_router_selection_jitter(1)
 
     def tearDown(self):
         for node in list(self.nodes.values()):