diff --git a/src/devices/input/keyboard_xt.c b/src/devices/input/keyboard_xt.c
index 6d0d6e7..5174d5f 100644
--- a/src/devices/input/keyboard_xt.c
+++ b/src/devices/input/keyboard_xt.c
@@ -54,7 +54,9 @@
 #include "../sound/sound.h"
 #include "../sound/snd_speaker.h"
 #include "../video/video.h"
-#include <cassette.h>
+#ifdef USE_CASSETTE
+# include <cassette.h>
+#endif
 #include "keyboard.h"