diff --git a/tests/ncplane.cpp b/tests/ncplane.cpp
index 847e6451e..586c89565 100644
--- a/tests/ncplane.cpp
+++ b/tests/ncplane.cpp
@@ -1,3 +1,4 @@
+#include <array>
 #include <cstdlib>
 #include <notcurses.h>
 #include "internal.h"