diff --git a/test/test_library.cpp b/test/test_library.cpp
index 3a5c48b..56df718 100644
--- a/test/test_library.cpp
+++ b/test/test_library.cpp
@@ -16,6 +16,8 @@
 /// Trivial library to ensure we have some linking present for
 /// `test_find_library`.
 
+#include "rcpputils/visibility_control.hpp"
+
 namespace test_library
 {