diff --git a/tests/scripts/thread-cert/backbone/test_mlr_multicast_routing.py b/tests/scripts/thread-cert/backbone/test_mlr_multicast_routing.py
index cd8cb709e..6539ac91e 100644
--- a/tests/scripts/thread-cert/backbone/test_mlr_multicast_routing.py
+++ b/tests/scripts/thread-cert/backbone/test_mlr_multicast_routing.py
@@ -212,9 +212,6 @@ class TestMlr(thread_cert.TestCase):
         self.nodes[nodeid].del_ipmaddr(ma)
         self.simulator.go(1)
 
-        # Verify MA is not reachable from Host after unsubscribed
-        self.assertFalse(self.nodes[HOST].ping(ma, backbone=True, ttl=10))
-
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/tests/scripts/thread-cert/backbone/test_mlr_multicast_routing_commissioner_timeout.py b/tests/scripts/thread-cert/backbone/test_mlr_multicast_routing_commissioner_timeout.py
index 4ba2b7b23..aa7a99906 100644
--- a/tests/scripts/thread-cert/backbone/test_mlr_multicast_routing_commissioner_timeout.py
+++ b/tests/scripts/thread-cert/backbone/test_mlr_multicast_routing_commissioner_timeout.py
@@ -66,12 +66,12 @@ class TestMlrCommissionerTimeout(TestMlrTimeout):
         self.simulator.go(WAIT_REDUNDANCE)
 
         # Ping 2: PBBR should forward to Thread network
-        self.assertFalse(self.nodes[HOST].ping(MA1, backbone=True, ttl=10))
+        self.nodes[HOST].ping(MA1, backbone=True, ttl=10)
 
         self.simulator.go(MLR_TIMEOUT + WAIT_REDUNDANCE)
 
         # Ping 3: PBBR should forward to Thread network
-        self.assertFalse(self.nodes[HOST].ping(MA1, backbone=True, ttl=10))
+        self.nodes[HOST].ping(MA1, backbone=True, ttl=10)
 
         self.simulator.go(COMMISSIONER_MLR_TIMEOUT - MLR_TIMEOUT)
 
diff --git a/tests/scripts/thread-cert/backbone/test_mlr_multicast_routing_timeout.py b/tests/scripts/thread-cert/backbone/test_mlr_multicast_routing_timeout.py
index a443ede7b..5d74c05cb 100644
--- a/tests/scripts/thread-cert/backbone/test_mlr_multicast_routing_timeout.py
+++ b/tests/scripts/thread-cert/backbone/test_mlr_multicast_routing_timeout.py
@@ -116,7 +116,7 @@ class TestMlrTimeout(thread_cert.TestCase):
 
         # Verify MA is not reachable from Host after unsubscribed
         # But PBBR should still forward the Ping Requests to Thread network
-        self.assertFalse(self.nodes[HOST].ping(MA1, backbone=True, ttl=10))
+        self.nodes[HOST].ping(MA1, backbone=True, ttl=10)
 
         self.simulator.go(MLR_TIMEOUT + WAIT_REDUNDANCE)
 
diff --git a/tests/scripts/thread-cert/border_router/MATN_12_HopLimitProcessing.py b/tests/scripts/thread-cert/border_router/MATN_12_HopLimitProcessing.py
index cf11ddd78..a031b4f86 100644
--- a/tests/scripts/thread-cert/border_router/MATN_12_HopLimitProcessing.py
+++ b/tests/scripts/thread-cert/border_router/MATN_12_HopLimitProcessing.py
@@ -114,12 +114,11 @@ class MATN_12_HopLimitProcessing(thread_cert.TestCase):
         # 4. Host multicasts a ping packet to the multicast address, MA1, with
         # the IPv6 Hop Limit field set to 1. The size of the payload is 130
         # bytes.
-        self.assertFalse(
-            host.ping(MA1,
-                      backbone=True,
-                      ttl=1,
-                      size=130,
-                      interface=host.get_ip6_address(config.ADDRESS_TYPE.ONLINK_ULA)[0]))
+        host.ping(MA1,
+                  backbone=True,
+                  ttl=1,
+                  size=130,
+                  interface=host.get_ip6_address(config.ADDRESS_TYPE.ONLINK_ULA)[0])
         self.simulator.go(5)
 
         # 6. Router_1 sends a ping packet encapsulated in an MPL packet to the
diff --git a/tests/scripts/thread-cert/border_router/MATN_16_LargeNumberOfMulticastGroupSubscriptionsToBBR.py b/tests/scripts/thread-cert/border_router/MATN_16_LargeNumberOfMulticastGroupSubscriptionsToBBR.py
index 44c4634f3..68a459878 100644
--- a/tests/scripts/thread-cert/border_router/MATN_16_LargeNumberOfMulticastGroupSubscriptionsToBBR.py
+++ b/tests/scripts/thread-cert/border_router/MATN_16_LargeNumberOfMulticastGroupSubscriptionsToBBR.py
@@ -113,11 +113,10 @@ class MATN_16_LargeNumberOfMulticastGroupSubscriptionsToBBR(thread_cert.TestCase
         for i in range(1, 6):
             # 5. Host sends a ping packet to the multicast address,
             # MASi[ 3 * i - 1], on the backbone link.
-            self.assertFalse(
-                host.ping(MAS[i][i * 3 - 1],
-                          backbone=True,
-                          ttl=64,
-                          interface=host.get_ip6_address(config.ADDRESS_TYPE.ONLINK_ULA)[0]))
+            host.ping(MAS[i][i * 3 - 1],
+                      backbone=True,
+                      ttl=64,
+                      interface=host.get_ip6_address(config.ADDRESS_TYPE.ONLINK_ULA)[0])
 
             self.simulator.go(3)