diff --git a/BaS_gcc/sys/interrupts.c b/BaS_gcc/sys/interrupts.c
index 0c0335f..3a313f5 100644
--- a/BaS_gcc/sys/interrupts.c
+++ b/BaS_gcc/sys/interrupts.c
@@ -39,7 +39,7 @@
 extern void (*rt_vbr[])(void);
 #define VBR	rt_vbr
 
-#define IRQ_DEBUG
+//#define IRQ_DEBUG
 #if defined(IRQ_DEBUG)
 #define dbg(format, arg...) do { xprintf("DEBUG %s(): " format, __FUNCTION__, ##arg); } while (0)
 #else
diff --git a/BaS_gcc/sys/mmu.c b/BaS_gcc/sys/mmu.c
index 757e5c8..0936025 100644
--- a/BaS_gcc/sys/mmu.c
+++ b/BaS_gcc/sys/mmu.c
@@ -73,7 +73,7 @@
 #error "unknown machine!"x
 #endif /* MACHINE_FIREBEE */
 
-#define DBG_MMU
+//#define DBG_MMU
 #ifdef DBG_MMU
 #define dbg(format, arg...) do { xprintf("DEBUG (%s()): " format, __FUNCTION__, ##arg);} while(0)
 #else