diff --git a/firmware/src/main.c b/firmware/src/main.c
index c3baf01..121233d 100644
--- a/firmware/src/main.c
+++ b/firmware/src/main.c
@@ -695,9 +695,8 @@ ISR(PCINT1_vect) {
             TCNT1 = 0;
         }
     } else { // press
-        if (!(TCCR1B & (1 << CS10))) {
+        if (!(TCCR1B & (1 << CS10)))
             TCCR1B |= (1 << CS11) | (1 << CS10); // Enable Timer/Counter1
-        }
     }
 
     // TODO: proper debouncing
@@ -706,7 +705,7 @@ ISR(PCINT1_vect) {
     sei();
 }
 
-// Timer/Counter1 compare match A
+// Timer/Counter1 compare match A for back event
 ISR(TIMER1_COMPA_vect) {
     cli();