diff --git a/src/emu/machine/i8155.c b/src/emu/machine/i8155.c
index c8296a5baef..9f752781ce9 100644
--- a/src/emu/machine/i8155.c
+++ b/src/emu/machine/i8155.c
@@ -28,7 +28,7 @@ const device_type I8156 = &device_creator<i8155_device>;
 //  MACROS / CONSTANTS
 //**************************************************************************
 
-#define LOG 1
+#define LOG 0
 
 enum
 {