diff --git a/atmel-samd/samd21_pins.c b/atmel-samd/samd21_pins.c
index 32acca8da1..e2a99f6203 100644
--- a/atmel-samd/samd21_pins.c
+++ b/atmel-samd/samd21_pins.c
@@ -170,14 +170,14 @@ PIN(PA07, EXTINT_CHANNEL(7), ADC_INPUT(ADC_POSITIVE_INPUT_PIN7), TOUCH(5),
 #ifdef PIN_PA08
 PIN(PA08, NO_EXTINT, ADC_INPUT(ADC_POSITIVE_INPUT_PIN16), NO_TOUCH,
     TCC(TCC0, 0, 0),
-    TCC(TCC1, 2, 2),
+    TCC(TCC1, 0, 2),
     SERCOM(SERCOM0, 0),
     SERCOM(SERCOM2, 0));
 #endif
 #ifdef PIN_PA09
 PIN(PA09, EXTINT_CHANNEL(9), ADC_INPUT(ADC_POSITIVE_INPUT_PIN17), NO_TOUCH,
     TCC(TCC0, 1, 1),
-    TCC(TCC1, 3, 3),
+    TCC(TCC1, 1, 3),
     SERCOM(SERCOM0, 1),
     SERCOM(SERCOM2, 1));
 #endif
@@ -388,7 +388,7 @@ PIN(PA24, EXTINT_CHANNEL(12), NO_ADC, NO_TOUCH,
 #ifdef PIN_PA25
 PIN(PA25, EXTINT_CHANNEL(13), NO_ADC, NO_TOUCH,
     TC(TC5, 1, 1),
-    TCC(TCC1, 3, 3),
+    TCC(TCC1, 1, 3),
     SERCOM(SERCOM3, 3),
     #ifdef SERCOM5
     SERCOM(SERCOM5, 3)
@@ -450,14 +450,14 @@ PIN(PA31, EXTINT_CHANNEL(11), NO_ADC, NO_TOUCH,
 #ifdef PIN_PB30
 PIN(PB30, EXTINT_CHANNEL(14), NO_ADC, NO_TOUCH,
     TCC(TCC0, 0, 0),
-    TCC(TCC1, 2, 2),
+    TCC(TCC1, 0, 2),
     NO_SERCOM,
     SERCOM(SERCOM5, 0));
 #endif
 #ifdef PIN_PB31
 PIN(PB31, EXTINT_CHANNEL(15), NO_ADC, NO_TOUCH,
     TCC(TCC0, 1, 1),
-    TCC(TCC1, 3, 3),
+    TCC(TCC1, 1, 3),
     NO_SERCOM,
     SERCOM(SERCOM5, 1));
 #endif