diff --git a/examples/protocols/mdns/CMakeLists.txt b/examples/protocols/mdns/CMakeLists.txt
index ddd7263c5..e624184a2 100644
--- a/examples/protocols/mdns/CMakeLists.txt
+++ b/examples/protocols/mdns/CMakeLists.txt
@@ -7,4 +7,4 @@ cmake_minimum_required(VERSION 3.5)
 set(EXTRA_COMPONENT_DIRS $ENV{IDF_PATH}/examples/common_components/protocol_examples_common)
 
 include($ENV{IDF_PATH}/tools/cmake/project.cmake)
-project(mdns-test)
+project(mdns_test)
diff --git a/examples/protocols/mdns/Makefile b/examples/protocols/mdns/Makefile
index 5b69ef89c..90408709d 100644
--- a/examples/protocols/mdns/Makefile
+++ b/examples/protocols/mdns/Makefile
@@ -3,7 +3,7 @@
 # project subdirectory.
 #
 
-PROJECT_NAME := mdns-test
+PROJECT_NAME := mdns_test
 
 EXTRA_COMPONENT_DIRS = $(IDF_PATH)/examples/common_components/protocol_examples_common
 
diff --git a/examples/protocols/mdns/mdns_example_test.py b/examples/protocols/mdns/mdns_example_test.py
index a3e36dd78..68a780687 100644
--- a/examples/protocols/mdns/mdns_example_test.py
+++ b/examples/protocols/mdns/mdns_example_test.py
@@ -115,7 +115,7 @@ def test_examples_protocol_mdns(env, extra_data):
     """
     dut1 = env.get_dut('mdns-test', 'examples/protocols/mdns', dut_class=ttfw_idf.ESP32DUT)
     # check and log bin size
-    binary_file = os.path.join(dut1.app.binary_path, 'mdns-test.bin')
+    binary_file = os.path.join(dut1.app.binary_path, 'mdns_test.bin')
     bin_size = os.path.getsize(binary_file)
     ttfw_idf.log_performance('mdns-test_bin_size', '{}KB'.format(bin_size // 1024))
     # 1. start mdns application