diff --git a/examples/protocols/https_server/simple/example_test.py b/examples/protocols/https_server/simple/example_test.py
index 7f75b7895d..31330bdba8 100644
--- a/examples/protocols/https_server/simple/example_test.py
+++ b/examples/protocols/https_server/simple/example_test.py
@@ -164,11 +164,11 @@ def test_examples_protocol_https_server_simple(env, extra_data):  # type: (tiny_
     # start test
     dut1.start_app()
     # Parse IP address and port of the server
-    dut1.expect(re.compile(r'Starting server'))
-    got_port = dut1.expect(re.compile(r'Server listening on port (\d+)'), timeout=30)[0]
+    dut1.expect(re.compile(r'Starting server'), timeout=60)
+    got_port = dut1.expect(re.compile(r'Server listening on port (\d+)[^\d]'), timeout=30)[0]
     Utility.console_log('Waiting to connect with AP')
 
-    got_ip = dut1.expect(re.compile(r'IPv4 address: (\d+\.\d+\.\d+\.\d+)'), timeout=30)[0]
+    got_ip = dut1.expect(re.compile(r'IPv4 address: (\d+\.\d+\.\d+\.\d+)[^\d]'), timeout=30)[0]
     # Expected logs
 
     Utility.console_log('Got IP   : ' + got_ip)
diff --git a/tools/ci/python_packages/idf_iperf_test_util/IperfUtility.py b/tools/ci/python_packages/idf_iperf_test_util/IperfUtility.py
index 3aebf10918..02a831157d 100644
--- a/tools/ci/python_packages/idf_iperf_test_util/IperfUtility.py
+++ b/tools/ci/python_packages/idf_iperf_test_util/IperfUtility.py
@@ -301,6 +301,7 @@ class IperfTestUtility(object):
                     process = subprocess.Popen(['iperf', '-s', '-B', self.pc_nic_ip,
                                                 '-t', str(TEST_TIME), '-i', '1', '-f', 'm'],
                                                stdout=f, stderr=f)
+                    time.sleep(1)
                     if bw_limit > 0:
                         self.dut.write('iperf -c {} -i 1 -t {} -b {}'.format(self.pc_nic_ip, TEST_TIME, bw_limit))
                     else: