diff --git a/STM32/cores/arduino/Arduino.h b/STM32/cores/arduino/Arduino.h
index 16ad42a..7af2ee5 100644
--- a/STM32/cores/arduino/Arduino.h
+++ b/STM32/cores/arduino/Arduino.h
@@ -68,8 +68,8 @@ void yield(void);
 #define degrees(rad) ((rad)*RAD_TO_DEG)
 #define sq(x) ((x)*(x))
 
-#define interrupts() sei()
-#define noInterrupts() cli()
+#define interrupts() __enable_irq()
+#define noInterrupts() __disable_irq()
 
 #define clockCyclesPerMicrosecond() ( F_CPU / 1000000L )
 #define clockCyclesToMicroseconds(a) ( (a) / clockCyclesPerMicrosecond() )