diff --git a/include/Support/slist b/include/Support/slist
index 4aad27ffe07..4f723df761c 100644
--- a/include/Support/slist
+++ b/include/Support/slist
@@ -30,3 +30,5 @@ using __gnu_cxx::slist;
 // GCC 2.x
 #include <slist>
 #endif
+
+#endif