diff --git a/cores/arduino/wiring.c b/cores/arduino/wiring.c
index 03b17c24ca769d2bb0e7f32b249fb29632c1d4a9..1e7f15a3f67ef3c0f39da6a5ce35397fcb58b2d5 100644
--- a/cores/arduino/wiring.c
+++ b/cores/arduino/wiring.c
@@ -80,7 +80,7 @@ void init( void )
   PM->APBCMASK.reg |= PM_APBCMASK_SERCOM0 | PM_APBCMASK_SERCOM1 | PM_APBCMASK_SERCOM2 | PM_APBCMASK_SERCOM3 | PM_APBCMASK_SERCOM4 | PM_APBCMASK_SERCOM5 ;
 
   // Clock TC/TCC for Pulse and Analog
-  PM->APBCMASK.reg |= PM_APBCMASK_TCC0 | PM_APBCMASK_TCC1 | PM_APBCMASK_TCC2 | PM_APBCMASK_TC3 | PM_APBCMASK_TC4 | PM_APBCMASK_TC5 | PM_APBCMASK_TC6 | PM_APBCMASK_TC7 ;
+  PM->APBCMASK.reg |= PM_APBCMASK_TCC0 | PM_APBCMASK_TCC1 | PM_APBCMASK_TCC2 | PM_APBCMASK_TC3 | PM_APBCMASK_TC4 | PM_APBCMASK_TC5 ;
 
   // Clock ADC/DAC for Analog
   PM->APBCMASK.reg |= PM_APBCMASK_ADC | PM_APBCMASK_DAC ;
@@ -111,7 +111,7 @@ void init( void )
   ADC->CTRLA.bit.ENABLE = 1; // Enable ADC
   while( ADC->STATUS.bit.SYNCBUSY == 1 )
   {
-    // Waiting for synchroinization
+    // Waiting for synchronization
   }
 
   // Initialize DAC