diff --git a/tests/test_mpsd_software.py b/tests/test_mpsd_software.py
index 7be6d771dd0f537a475d4af7f02cd5dd653e2227..96bb22de3a331282407a27092090f58fbc3c827e 100644
--- a/tests/test_mpsd_software.py
+++ b/tests/test_mpsd_software.py
@@ -491,6 +491,8 @@ def create_fake_environment(tmp_path, mpsd_release, expected_toolchain_map=None)
         spack_folder.mkdir(parents=True, exist_ok=True)
         logs_folder = tmp_path / mpsd_release / "logs"
         logs_folder.mkdir(parents=True, exist_ok=True)
+        # Simulate the creation of APEX.log
+        # (which is created by the main function)
         (logs_folder / "APEX.log").touch()
         for toolchain in expected_toolchain_map[microarch]:
             toolchain_lua_file = toolchain_lmod_folder / f"{toolchain}.lua"