diff --git a/firmware/target/mips/ingenic_jz47xx/system-jz4760.c b/firmware/target/mips/ingenic_jz47xx/system-jz4760.c
index 78f9fc6cab..01d6d8d93e 100644
--- a/firmware/target/mips/ingenic_jz47xx/system-jz4760.c
+++ b/firmware/target/mips/ingenic_jz47xx/system-jz4760.c
@@ -28,7 +28,7 @@
 #include "kernel.h"
 #include "power.h"
 
-#define USE_HW_UDELAY
+//#define USE_HW_UDELAY  // This is BROKEN.
 
 static int irq;
 static void UIRQ(void)