diff --git a/AK/CheckedFormatString.h b/AK/CheckedFormatString.h
index 33943be44c4..cf83944533f 100644
--- a/AK/CheckedFormatString.h
+++ b/AK/CheckedFormatString.h
@@ -8,6 +8,7 @@
 
 #include <AK/AllOf.h>
 #include <AK/AnyOf.h>
+#include <AK/Array.h>
 #include <AK/StdLibExtras.h>
 #include <AK/StringView.h>