diff --git a/Geigerzaehler/main.c b/Geigerzaehler/main.c
index c291437..9ed238a 100644
--- a/Geigerzaehler/main.c
+++ b/Geigerzaehler/main.c
@@ -49,11 +49,11 @@ int main()
 	DDRB |= (1 << PORTB5);	// Onboard-Led
 	
 	// Interrupts
-	// for INT0	Pin-D2	High-voltage check
-    EICRA |= (0 << ISC01)|(1 << ISC00); // On at any edge		[Code: 01]
+	// for INT0	Pin-D2	-	Counter-click
+    EICRA |= (0 << ISC01)|(1 << ISC01); // On rising edge	[Code: 01]
     EIMSK |= (1 << INT0);				// Activate Interrupt INT0
-	// for INT1	Pin-D3	Counter-click
-    EICRA |= (1 << ISC11)|(1 << ISC10);	// On rising edge		[Code: 11]
+	// for INT1	Pin-D3	-	High-voltage check
+    EICRA |= (1 << ISC10)|(1 << ISC11);	// On any edge		[Code: 11]
     EIMSK |= (1 <<INT1);				// Activate Interrupt INT1
 	
 	// Init timer1
@@ -61,11 +61,11 @@ int main()
 	
 	PORTB |= (boost_highVoltage_nextTick << PORTB5);	// Onboard-Led
 	
+	sei();		// Activate global interrupts (after checks) [when an interrupt was fired, it will now be executed]
+	
 	// Endless loop
     while (1) 
     {
-		cli();		// Deactivate global interrupts (before checks)
-		
 		/*
 		 * HighVoltage boosting
 		 */
@@ -124,8 +124,6 @@ int main()
 			}
 		}
     }
-	
-	sei();		// Activate global interrupts (after checks) [when an interrupt was fired, it will now be executed]
 }
 
 /* 
@@ -133,7 +131,7 @@ int main()
  */
 void timer1_init()
 {
-	// set up timer with speed: cpu-clock / prescaler
+	// set up timer with speed = cpu-clock / prescaler
 	switch(timer1_prescaler){		// [CS12	CS11	CS10]
 		default:
 		case 1:
@@ -167,12 +165,23 @@ void timer1_init()
 /*
  * ISR - Interrupt service routine
  */
-// Address: 0x001	INT0	-	On any edge		[Code: 01]
-// Handles:	Over/Below working voltage
+// Address: 0x001	INT0	-	On rising edge	[Code: 11]
+// Handles:	Counter tube "click"
 ISR(INT0_vect)
+{
+	// Tick detected, signalOutput
+	signalOutput_piezo_nextTick = TCNT1;	//  Run as soon as possible
+	signalOutput_led_nextTick = TCNT1;
+	
+	reti();		// Exit interrupt-handler
+}
+
+// Address: 0x002	INT1	-	On any edge		[Code: 01]
+// Handles:	Over/Below working voltage
+ISR(INT1_vect)
 {
 	if(!(PIND & (1 << PORTD2)))	// Falling edge
-	{	
+	{
 		// Below ~400V, activate booster
 		boost_highVoltage_nextTick = TCNT1;	//  Run as soon as possible
 		PORTB |= (1 << PORTB5);	// Onboard-Led
@@ -188,18 +197,7 @@ ISR(INT0_vect)
 		
 		// reset state
 		PORTD |= (0 << PORTD4);			// pin on low
+		
+		reti();		// Exit interrupt-handler
 	}
-	
-	reti();		// Exit interrupt-handler
-}
-
-// Address: 0x002	INT1	-	On rising edge	[Code: 11]
-// Handles:	Counter tube "tick"
-ISR(INT1_vect)
-{
-	// Tick detected, signalOutput
-	signalOutput_piezo_nextTick = TCNT1;	//  Run as soon as possible
-	signalOutput_led_nextTick = TCNT1;
-	
-	reti();		// Exit interrupt-handler
 }