diff --git a/scripts/mbedtls_dev/test_data_generation.py b/scripts/mbedtls_dev/test_data_generation.py
index 2b90ef4b79..993cd4bdf4 100644
--- a/scripts/mbedtls_dev/test_data_generation.py
+++ b/scripts/mbedtls_dev/test_data_generation.py
@@ -139,9 +139,8 @@ class BaseTarget(metaclass=ABCMeta):
 
 class TestGenerator:
     """Generate test cases and write to data files."""
-    def __init__(self, options) -> None:
-        self.test_suite_directory = self.get_option(options, 'directory',
-                                                    'tests/suites')
+    def __init__(self, _options) -> None:
+        self.test_suite_directory = 'tests/suites'
         # Update `targets` with an entry for each child class of BaseTarget.
         # Each entry represents a file generated by the BaseTarget framework,
         # and enables generating the .data files using the CLI.
@@ -150,11 +149,6 @@ class TestGenerator:
             for subclass in BaseTarget.__subclasses__()
         })
 
-    @staticmethod
-    def get_option(options, name: str, default: T) -> T:
-        value = getattr(options, name, None)
-        return default if value is None else value
-
     def filename_for(self, basename: str) -> str:
         """The location of the data file with the specified base name."""
         return posixpath.join(self.test_suite_directory, basename + '.data')