diff --git a/source/io.cpp b/source/io.cpp
index 7cc3be8..9191c79 100644
--- a/source/io.cpp
+++ b/source/io.cpp
@@ -29,7 +29,7 @@
 #include "audio.h"
 #include "memory.h"
 
-#define IO_DUMP
+//#define IO_DUMP
 
 extern uint8_t *externalEeprom;
 extern uint32_t romAddressMask;