diff --git a/lib/include/isr.h b/lib/include/isr.h
index 8617f7537..06825cc7b 100644
--- a/lib/include/isr.h
+++ b/lib/include/isr.h
@@ -71,6 +71,8 @@ enum interrupt_nums {
 #define enable_irq(irq)  (*INTENNUM  = INT_NUM_##irq)
 #define disable_irq(irq) (*INTDISNUM = INT_NUM_##irq)
 
+#define safe_irq_disable(x)  volatile uint32_t saved_irq; saved_irq = *INTENABLE; disable_irq(x)
+#define irq_restore() *INTENABLE = saved_irq
 
 extern void tmr0_isr(void) __attribute__((weak));
 extern void tmr1_isr(void) __attribute__((weak));
diff --git a/lib/maca.c b/lib/maca.c
index a7f68bb51..5a67b2476 100644
--- a/lib/maca.c
+++ b/lib/maca.c
@@ -98,9 +98,6 @@ enum posts {
 };
 static volatile uint8_t last_post = NO_POST;
 
-#define safe_irq_disable(x)  volatile uint32_t saved_irq; saved_irq = *INTENABLE; disable_irq(x)
-#define irq_restore() *INTENABLE = saved_irq
-
 volatile uint8_t fcs_mode = USE_FCS; 
 
 /* call periodically to */