diff --git a/tach/tach.ino b/tach/tach.ino
index 5d9f687..fefdf1c 100644
--- a/tach/tach.ino
+++ b/tach/tach.ino
@@ -50,10 +50,10 @@ void loop() {
   unsigned long current_time = millis();
 
   if (current_time - last_measurement_time >= MEASUREMENT_PERIOD_MS) {
-    //detachInterrupt(digitalPinToInterrupt(TACH_INTERRUPT_PIN));
+    detachInterrupt(digitalPinToInterrupt(TACH_INTERRUPT_PIN));
     unsigned long collected_pulses = pulse_count;
     pulse_count = 0;
-    //attachInterrupt(digitalPinToInterrupt(TACH_INTERRUPT_PIN), count_pulse, RISING);
+    attachInterrupt(digitalPinToInterrupt(TACH_INTERRUPT_PIN), count_pulse, RISING);
 
     // Calculate RPM
     // RPM = (pulses / pulses_per_revolution) / (measurement_period_ms / 1000 / 60)