diff --git a/cpu/nrf5x_common/periph/wdt.c b/cpu/nrf5x_common/periph/wdt.c
index 7ef31fb184..aa34e505c7 100644
--- a/cpu/nrf5x_common/periph/wdt.c
+++ b/cpu/nrf5x_common/periph/wdt.c
@@ -102,7 +102,7 @@ void wdt_setup_reboot(uint32_t min_time, uint32_t max_time)
 #ifdef MODULE_PERIPH_WDT_CB
 /* The reset can't be stopped when the callback is triggered: so the MCU will
    reset in any case after 2 cycles of 32.768kHz clock. This is very short so
-   only basic and fast operations can be perfomed in the callback function. */
+   only basic and fast operations can be performed in the callback function. */
 void wdt_setup_reboot_with_callback(uint32_t min_time, uint32_t max_time,
                                     wdt_cb_t cb, void* arg)
 {