diff --git a/tests/components/evohome/const.py b/tests/components/evohome/const.py
index c25a259e602..c8981529cc2 100644
--- a/tests/components/evohome/const.py
+++ b/tests/components/evohome/const.py
@@ -15,5 +15,5 @@ TEST_INSTALLS: Final = (
     "default",  # evohome (multi-zone, with DHW & ghost zones)
     "h032585",  # VisionProWifi (no preset_mode for TCS)
     "h099625",  # RoundThermostat
-    "system_004",  # RoundModulation
+    "sys_004",  # RoundModulation
 )
diff --git a/tests/components/evohome/fixtures/system_004/status_3164610.json b/tests/components/evohome/fixtures/sys_004/status_3164610.json
similarity index 100%
rename from tests/components/evohome/fixtures/system_004/status_3164610.json
rename to tests/components/evohome/fixtures/sys_004/status_3164610.json
diff --git a/tests/components/evohome/fixtures/system_004/user_locations.json b/tests/components/evohome/fixtures/sys_004/user_locations.json
similarity index 100%
rename from tests/components/evohome/fixtures/system_004/user_locations.json
rename to tests/components/evohome/fixtures/sys_004/user_locations.json
diff --git a/tests/components/evohome/snapshots/test_init.ambr b/tests/components/evohome/snapshots/test_init.ambr
index 8e5338ecb9b..e79e750370d 100644
--- a/tests/components/evohome/snapshots/test_init.ambr
+++ b/tests/components/evohome/snapshots/test_init.ambr
@@ -778,7 +778,7 @@
     }),
   ])
 # ---
-# name: test_entities[system_004]
+# name: test_entities[sys_004]
   list([
     StateSnapshot({
       'attributes': ReadOnlyDict({