diff --git a/esphome/components/zephyr/core.cpp b/esphome/components/zephyr/core.cpp
index 9d00e6027f..f0772a4422 100644
--- a/esphome/components/zephyr/core.cpp
+++ b/esphome/components/zephyr/core.cpp
@@ -16,7 +16,7 @@ static const device *const WDT = DEVICE_DT_GET(DT_ALIAS(watchdog0));
 #endif
 
 void yield() { ::k_yield(); }
-uint32_t millis() { return k_ticks_to_ms_floor32(k_uptime_ticks()); }
+uint32_t millis() { return static_cast<uint32_t>(millis_64()); }
 uint64_t millis_64() { return static_cast<uint64_t>(k_uptime_get()); }
 uint32_t micros() { return k_ticks_to_us_floor32(k_uptime_ticks()); }
 void delayMicroseconds(uint32_t us) { ::k_usleep(us); }