diff --git a/test/array/parray.cpp b/test/array/parray.cpp
index 984a491f..b9638eb6 100644
--- a/test/array/parray.cpp
+++ b/test/array/parray.cpp
@@ -7,6 +7,8 @@
 int
 main ()
 {
+    static_assert (is_container_v<cruft::parray<int>>);
+
     cruft::TAP::logger tap;
 
     int raw[3] = { -5, 9, 0 };