diff --git a/avr/modules/basetimer/main.asm b/avr/modules/basetimer/main.asm
index a119317..1113b83 100644
--- a/avr/modules/basetimer/main.asm
+++ b/avr/modules/basetimer/main.asm
@@ -109,8 +109,8 @@ BaseTimer_Run_End:
 ;
 ; OC0A interrupt handler
 ;
-; Increments baseTimerModuleTickCounter, if it reaches 0 then baseTimerTicksSinceLastRun
-; is also incremented and the baseTimerModuleTickCounter reloaded.
+; Decrements baseTimerModuleTickCounter, if it reaches 0 then baseTimerTicksSinceLastRun
+; is incremented and the baseTimerModuleTickCounter reloaded.
 ; The rest is done outside ISR baseTimerTicksSinceLastRun in BaseTimer_Run.
 
 baseTimerIrqOC0A: