diff --git a/peripherals/evsys.c b/peripherals/evsys.c
index 03700ac..bbcd0c1 100644
--- a/peripherals/evsys.c
+++ b/peripherals/evsys.c
@@ -28,7 +28,7 @@
 #include "evsys.h"
 
 void evsys_configure_channel(uint8_t channel, uint8_t generator, uint8_t user, bool run_in_standby, bool asynchronous) {
-#if defined(_SAMD21_) || defined(_SAMD11_)
+#if defined(_SAMD11_) || defined(_SAMD21_) || defined(_SAMD51_)
     // TODO: these devices have a different way of configuring events
 #else
     EVSYS->USER[user].reg = EVSYS_USER_CHANNEL(channel + 1);