diff --git a/USBHost_t36.h b/USBHost_t36.h
index 131cff5..bb0ac03 100644
--- a/USBHost_t36.h
+++ b/USBHost_t36.h
@@ -56,7 +56,7 @@
 // your best effort to read chapter 4 before asking USB questions!
 
 
-#define USBHOST_PRINT_DEBUG
+//#define USBHOST_PRINT_DEBUG
 
 /************************************************/
 /*  Data Types                                  */