diff --git a/indra/llcommon/tests/apply_test.cpp b/indra/llcommon/tests/apply_test.cpp
index 9a17afc18c8314d07768cbbf537f9fd5c5e3f884..56b497e0c84951e3ac77219aba8965c72b133486 100644
--- a/indra/llcommon/tests/apply_test.cpp
+++ b/indra/llcommon/tests/apply_test.cpp
@@ -20,6 +20,9 @@
 // other Linden headers
 #include "llsd.h"
 #include "llsdutil.h"
+#include <array>
+#include <string>
+#include <vector>
 
 // for ensure_equals
 std::ostream& operator<<(std::ostream& out, const std::vector<std::string>& stringvec)