diff --git a/mrbgems/mruby-bin-mirb/tools/mirb/mirb_term.c b/mrbgems/mruby-bin-mirb/tools/mirb/mirb_term.c
index 24c0fec29..ced2b4c2f 100644
--- a/mrbgems/mruby-bin-mirb/tools/mirb/mirb_term.c
+++ b/mrbgems/mruby-bin-mirb/tools/mirb/mirb_term.c
@@ -13,6 +13,7 @@
 #include <unistd.h>
 #include <termios.h>
 #include <sys/ioctl.h>
+#include <sys/select.h>
 #include <errno.h>
 
 /*