diff --git a/lib/ruby_indexer/lib/ruby_indexer/index.rb b/lib/ruby_indexer/lib/ruby_indexer/index.rb
index 89fd510d2..da8a0448b 100644
--- a/lib/ruby_indexer/lib/ruby_indexer/index.rb
+++ b/lib/ruby_indexer/lib/ruby_indexer/index.rb
@@ -619,13 +619,13 @@ def existing_or_new_singleton_class(name)
     sig do
       type_parameters(:T).params(
         path: String,
-        type: T.nilable(T::Class[T.all(T.type_parameter(:T), Entry)]),
-      ).returns(T.nilable(T::Array[T.type_parameter(:T)]))
+        type: T::Class[T.all(T.type_parameter(:T), Entry)],
+      ).returns(T::Array[T.type_parameter(:T)])
     end
     def entries_for(path, type = nil)
       type = Entry if type.nil?
 
-      @files_to_entries[path]&.grep(type)&.grep_v(RubyIndexer::Entry::SingletonClass)
+      Array(@files_to_entries[path]).grep(type).grep_v(RubyIndexer::Entry::SingletonClass)
     end
 
     private
diff --git a/lib/ruby_indexer/test/index_test.rb b/lib/ruby_indexer/test/index_test.rb
index aa027c12e..54d50be96 100644
--- a/lib/ruby_indexer/test/index_test.rb
+++ b/lib/ruby_indexer/test/index_test.rb
@@ -1859,5 +1859,9 @@ def self.my_singleton_def; end
       entries = @index.entries_for("/fake/path/foo.rb", RubyIndexer::Entry::Namespace)
       assert_equal(["Foo", "Bar"], entries.map(&:name))
     end
+
+    def test_entries_for_returns__nil_if_no_matches
+      assert_empty(@index.entries_for("non_existing_file.rb"))
+    end
   end
 end