diff --git a/protoc-gen-java-optional-test/src/test/resources/no-package-type.proto b/protoc-gen-java-optional-test/src/test/resources/no-package-type.proto
new file mode 100644
index 0000000..1e1959d
--- /dev/null
+++ b/protoc-gen-java-optional-test/src/test/resources/no-package-type.proto
@@ -0,0 +1,12 @@
+syntax = "proto3";
+
+option java_multiple_files = true;
+option java_package = "org.test.datatypes";
+
+message NoPackageTestMessage {
+  message NestedTestMessage {
+    string string = 1;
+    optional string optional_string = 2;
+  }
+}
+