diff --git a/sys/include/xtimer.h b/sys/include/xtimer.h
index aea20cc02972..e48a23dc4ba2 100644
--- a/sys/include/xtimer.h
+++ b/sys/include/xtimer.h
@@ -150,6 +150,15 @@ static inline void xtimer_sleep(uint32_t seconds);
  */
 static inline void xtimer_usleep(uint32_t microseconds);
 
+/**
+ * @brief Pause the execution of a thread for some microseconds
+ *
+ * See xtimer_usleep() for more information.
+ *
+ * @param[in] microseconds  the amount of microseconds the thread should sleep
+ */
+static inline void xtimer_usleep64(uint64_t microseconds);
+
 /**
  * @brief Stop execution of a thread for some time
  *