diff --git a/libretro/libretro-core.c b/libretro/libretro-core.c
index 3eb51fb..c00c625 100644
--- a/libretro/libretro-core.c
+++ b/libretro/libretro-core.c
@@ -5,6 +5,7 @@
 #include "devices.h"
 #include "esc.h"
 #include "memory.h"
+#include "cassette.h"
 
 cothread_t mainThread;
 cothread_t emuThread;