diff --git a/src/uClock.cpp b/src/uClock.cpp
index 37f311f..a5ee8e6 100755
--- a/src/uClock.cpp
+++ b/src/uClock.cpp
@@ -66,25 +66,23 @@ void uclockInitTimer()
 {
 	// begin at 120bpm (20833us)
 	const uint16_t init_clock = 20833;
-	ATOMIC(
-	#if defined(TEENSYDUINO)
-		_uclockTimer.begin(uclockISR, init_clock); 
-
-		// Set the interrupt priority level, controlling which other interrupts
-		// this timer is allowed to interrupt. Lower numbers are higher priority, 
-		// with 0 the highest and 255 the lowest. Most other interrupts default to 128. 
-		// As a general guideline, interrupt routines that run longer should be given 
-		// lower priority (higher numerical values).
-		_uclockTimer.priority(0);
-	#endif
+#if defined(TEENSYDUINO)
+	_uclockTimer.begin(uclockISR, init_clock); 
+
+	// Set the interrupt priority level, controlling which other interrupts
+	// this timer is allowed to interrupt. Lower numbers are higher priority, 
+	// with 0 the highest and 255 the lowest. Most other interrupts default to 128. 
+	// As a general guideline, interrupt routines that run longer should be given 
+	// lower priority (higher numerical values).
+	_uclockTimer.priority(0);
+#endif
 
-	#if defined(SEEED_XIAO_M0)
-		_uclockTimer.initialize(init_clock);
+#if defined(SEEED_XIAO_M0)
+	_uclockTimer.initialize(init_clock);
 
-		// attach to generic uclock ISR
-		_uclockTimer.attachInterrupt(uclockISR);
-	#endif
-	)
+	// attach to generic uclock ISR
+	_uclockTimer.attachInterrupt(uclockISR);
+#endif
 }
 #endif