diff --git a/boards/hamilton/include/periph_conf.h b/boards/hamilton/include/periph_conf.h
index 68d8881736..96a02c4693 100644
--- a/boards/hamilton/include/periph_conf.h
+++ b/boards/hamilton/include/periph_conf.h
@@ -201,10 +201,10 @@ static const pwm_conf_chan_t pwm_chan1_config[] = {
 /* PWM device configuration */
 static const pwm_conf_t pwm_config[] = {
 #if PWM_0_EN
-    {TCC1, pwm_chan0_config, ARRAY_SIZE(pwm_chan0_config)},
+    {TCC_CONFIG(TCC1), pwm_chan0_config, ARRAY_SIZE(pwm_chan0_config), SAM0_GCLK_MAIN},
 #endif
 #if PWM_1_EN
-    {TCC0, pwm_chan1_config, ARRAY_SIZE(pwm_chan1_config)},
+    {TCC_CONFIG(TCC0), pwm_chan1_config, ARRAY_SIZE(pwm_chan1_config), SAM0_GCLK_MAIN},
 #endif
 };