diff --git a/include/Compiler/Compiler.h b/include/Compiler/Compiler.h
index 2d824604..05b30b65 100644
--- a/include/Compiler/Compiler.h
+++ b/include/Compiler/Compiler.h
@@ -16,8 +16,6 @@ std::unique_ptr<clang::CompilerInvocation> createInvocation(StringRef filename,
 
 std::unique_ptr<clang::CompilerInstance> createInstance(std::shared_ptr<clang::CompilerInvocation> invocation);
 
-
-
 /// - build AST
 /// - build module
 /// - build preamble
diff --git a/tests/Feature/CodeCompletion.cpp b/tests/Feature/CodeCompletion.cpp
index c3d95d96..57da7b7b 100644
--- a/tests/Feature/CodeCompletion.cpp
+++ b/tests/Feature/CodeCompletion.cpp
@@ -62,6 +62,9 @@ TEST(clice, CodeCompletion) {
     instance->setCodeCompletionConsumer(new CodeCompletionConsumer());
     auto action = std::make_unique<clang::SyntaxOnlyAction>();
 
+    // FIXME: test with preamble build, note we need to set `MaxLines` to avoid the bound exceed the location of non
+    // self contained file.
+
     if(!action->BeginSourceFile(*instance, instance->getFrontendOpts().Inputs[0])) {
         llvm::errs() << "Failed to begin source file\n";
         std::terminate();