diff --git a/devices/ioctrl/macio.h b/devices/ioctrl/macio.h
index 403a679..f2a9a95 100644
--- a/devices/ioctrl/macio.h
+++ b/devices/ioctrl/macio.h
@@ -83,10 +83,7 @@ enum {
     MIO_INT_EVENTS1 = 0x20,
     MIO_INT_MASK1   = 0x24,
     MIO_INT_CLEAR1  = 0x28,
-    MIO_INT_LEVELS1 = 0x2C,
-
-    MIO_FATMAN_FLAGS = 0x34,
-    // 0x300000 bits for composite/s-video connected displays (1 = disconnected)
+    MIO_INT_LEVELS1 = 0x2C
 };
 
 class IobusDevice {