diff --git a/tests/optional_scalars_test.h b/tests/optional_scalars_test.h
new file mode 100644
index 0000000..922e52c
--- /dev/null
+++ b/tests/optional_scalars_test.h
@@ -0,0 +1,13 @@
+#ifndef TESTS_OPTIONAL_SCALARS_TEST_H
+#define TESTS_OPTIONAL_SCALARS_TEST_H
+
+
+namespace flatbuffers {
+namespace tests {
+
+void OptionalScalarsTest();
+
+}  // namespace tests
+}  // namespace flatbuffers
+
+#endif