diff --git a/lldb/test/API/lang/cpp/step-through-trampoline/foo.h b/lldb/test/API/lang/cpp/step-through-trampoline/foo.h
index edfeae5a215f3..4ae6e7c13c4b9 100644
--- a/lldb/test/API/lang/cpp/step-through-trampoline/foo.h
+++ b/lldb/test/API/lang/cpp/step-through-trampoline/foo.h
@@ -1,2 +1,2 @@
-extern void foo();
+LLDB_TEST_API extern void foo();