diff --git a/src/solidlsp/ls.py b/src/solidlsp/ls.py
index 5ebdd6e0..73e1bfc3 100644
--- a/src/solidlsp/ls.py
+++ b/src/solidlsp/ls.py
@@ -3321,6 +3321,7 @@ class SolidLanguageServer(ABC):
     def _create_initialize_params_builder(self) -> InitializeParamsBuilder:
         return DefaultInitializeParamsBuilder(self)
 
+    @abstractmethod
     def _create_base_initialize_params(self) -> dict | InitializeParams:
         """
         Subclasses should override this method to provide server-specific InitializeParams settings,
@@ -3340,7 +3341,6 @@ class SolidLanguageServer(ABC):
 
         :return: the base InitializeParams settings
         """
-        raise NotImplementedError
 
     def _create_initialize_params(self) -> InitializeParams:
         """
diff --git a/test/solidlsp/test_rename_didopen.py b/test/solidlsp/test_rename_didopen.py
index 735e4642..f2902d89 100644
--- a/test/solidlsp/test_rename_didopen.py
+++ b/test/solidlsp/test_rename_didopen.py
@@ -7,6 +7,9 @@ class DummyLanguageServer(SolidLanguageServer):
     def _start_server(self) -> None:
         raise AssertionError("Not used in this test")
 
+    def _create_base_initialize_params(self) -> dict:
+        return {}
+
 
 def test_request_rename_symbol_edit_opens_file_before_rename(tmp_path) -> None:
     (tmp_path / "index.ts").write_text("export const x = 1;\n", encoding="utf-8")