diff --git a/Tests/IncludeDirectories/empty.cpp b/Tests/IncludeDirectories/empty.cpp
index ab32cf6c8a..1787013f64 100644
--- a/Tests/IncludeDirectories/empty.cpp
+++ b/Tests/IncludeDirectories/empty.cpp
@@ -1 +1,4 @@
-// No content
+#ifdef _WIN32
+__declspec(dllexport)
+#endif
+int empty() { return 0; }