diff --git a/cores/arduino/zephyrCommon.cpp b/cores/arduino/zephyrCommon.cpp
index 178704cd..045c6b55 100644
--- a/cores/arduino/zephyrCommon.cpp
+++ b/cores/arduino/zephyrCommon.cpp
@@ -271,7 +271,7 @@ void delay(unsigned long ms) { k_sleep(K_MSEC(ms)); }
 void delayMicroseconds(unsigned int us) { k_sleep(K_USEC(us)); }
 
 unsigned long micros(void) {
-  return k_cyc_to_us_floor32(k_cycle_get_32());
+  return k_cyc_to_us_floor32(k_cycle_get_64());
 }
 
 unsigned long millis(void) { return k_uptime_get_32(); }