diff --git a/boards/common/saml1x/include/periph_conf.h b/boards/common/saml1x/include/periph_conf.h
index b8e3e0f0b6..d416c0f633 100644
--- a/boards/common/saml1x/include/periph_conf.h
+++ b/boards/common/saml1x/include/periph_conf.h
@@ -46,7 +46,7 @@ static const tc32_conf_t timer_config[] = {
         .dev            = TC0,
         .irq            = TC0_IRQn,
         .mclk           = &MCLK->APBCMASK.reg,
-        .mclk_mask      = MCLK_APBCMASK_TC0 | MCLK_APBCMASK_TC1,
+        .mclk_mask      = MCLK_APBCMASK_TC0_Msk | MCLK_APBCMASK_TC1_Msk,
         .gclk_id        = TC0_GCLK_ID,
         .gclk_src       = SAM0_GCLK_MAIN,
         .flags          = TC_CTRLA_MODE_COUNT32,
@@ -55,7 +55,7 @@ static const tc32_conf_t timer_config[] = {
         .dev            = TC2,
         .irq            = TC2_IRQn,
         .mclk           = &MCLK->APBCMASK.reg,
-        .mclk_mask      = MCLK_APBCMASK_TC2,
+        .mclk_mask      = MCLK_APBCMASK_TC2_Msk,
         .gclk_id        = TC2_GCLK_ID,
         .gclk_src       = SAM0_GCLK_MAIN,
         .flags          = TC_CTRLA_MODE_COUNT16,