diff --git a/tests/linkam95.py b/tests/linkam95.py
index 3f6f055e..8dff22fe 100644
--- a/tests/linkam95.py
+++ b/tests/linkam95.py
@@ -14,7 +14,6 @@
         "directory": get_default_ioc_dir("LINKAM95"),
         "macros": {},
         "emulator": EMULATOR_NAME,
-        "lewis_package": None,
     },
 ]
 
diff --git a/tests/zfhifi.py b/tests/zfhifi.py
index 36393c71..d3d1d450 100644
--- a/tests/zfhifi.py
+++ b/tests/zfhifi.py
@@ -86,16 +86,6 @@ def group3_hall_probe_ioc(iocnum: int) -> dict[str, Any]:
         "directory": get_default_ioc_dir("G3HALLPR", iocnum=iocnum),
         "emulator": "group3hallprobe",
         "emulator_id": f"group3hallprobe_{iocnum}",
-        "lewis_additional_path": os.path.join(
-            "c:\\",
-            "Instrument",
-            "Apps",
-            "EPICS",
-            "support",
-            "group3hallprobe",
-            "master",
-            "system_tests",
-        ),
         "macros": {
             "FIELD_SCAN_RATE": ".1 second",
             "TEMP_SCAN_RATE": ".1 second",
diff --git a/utils/emulator_launcher.py b/utils/emulator_launcher.py
index 556ff5a4..41dbce0e 100644
--- a/utils/emulator_launcher.py
+++ b/utils/emulator_launcher.py
@@ -346,7 +346,7 @@ def wrapper(msg: str) -> str | None:
 
         if msg is None:
             msg = (
-                "Expected function '{}' to evaluate to True " "when reading emulator property '{}'."
+                "Expected function '{}' to evaluate to True when reading emulator property '{}'."
             ).format(func.__name__, emulator_property)
 
         err = self._wait_for_emulator_lambda(partial(wrapper, msg), timeout)
@@ -400,8 +400,7 @@ def wrapper(msg: str) -> str | None:
 
         if msg is None:
             msg = (
-                "Expected function '{}' to evaluate to False "
-                "when reading emulator property '{}'."
+                "Expected function '{}' to evaluate to False when reading emulator property '{}'."
             ).format(func.__name__, emulator_property)
 
         err = self._wait_for_emulator_lambda(partial(wrapper, msg), timeout)
@@ -588,8 +587,6 @@ def __init__(
             "python_path", os.path.join(DEFAULT_PY_PATH, "python.exe")
         )
         self._lewis_protocol: str = options.get("lewis_protocol", "stream")
-        self._lewis_additional_path: str = options.get("lewis_additional_path", emulator_path)
-        self._lewis_package: str = options.get("lewis_package", "lewis_emulators")
         self._default_timeout: float = options.get("default_timeout", 5)
         self._speed: float = options.get("speed", 100)
 
@@ -646,10 +643,6 @@ def _open(self) -> None:
                 ),
             ]
         )
-        if self._lewis_additional_path is not None:
-            lewis_command_line.extend(["-a", self._lewis_additional_path])
-        if self._lewis_package is not None:
-            lewis_command_line.extend(["-k", self._lewis_package])
 
         # Set lewis speed
         lewis_command_line.extend(["-e", str(self._speed), self._device])