1 files changed, 1 insertions, 0 deletions
diff --git a/marshal.c b/marshal.c
index 480ae599a2..2c6ed7a1dd 100644
--- a/marshal.c
+++ b/marshal.c
@@ -22,6 +22,7 @@
 #include "encindex.h"
 #include "id_table.h"
 #include "internal.h"
+#include "internal/array.h"
 #include "internal/bignum.h"
 #include "internal/class.h"
 #include "internal/encoding.h"