diff --git a/selfdrive/boardd/boardd.cc b/selfdrive/boardd/boardd.cc
index 06d7fae5b1..1a7a49e75b 100644
--- a/selfdrive/boardd/boardd.cc
+++ b/selfdrive/boardd/boardd.cc
@@ -80,14 +80,14 @@ bool check_all_connected(const std::vector<Panda *> &pandas) {
 
 enum class SyncTimeDir { SYNC_TO_PANDA, SYNC_FROM_PANDA };
 
-void sync_time(Panda *panda, SYNC_TIME_DIR dir) {
+void sync_time(Panda *panda, SyncTimeDir dir) {
   if (!panda->has_rtc) return;
 
   setenv("TZ", "UTC", 1);
   struct tm sys_time = util::get_time();
   struct tm rtc_time = panda->get_rtc();
 
-  if (dir == SYNC_TO_PANDA) {
+  if (dir == SyncTimeDir::SYNC_TO_PANDA) {
     if (util::time_valid(sys_time)) {
       // Write time to RTC if it looks reasonable
       double seconds = difftime(mktime(&rtc_time), mktime(&sys_time));
@@ -97,7 +97,7 @@ void sync_time(Panda *panda, SYNC_TIME_DIR dir) {
               seconds, get_time_str(sys_time).c_str(), get_time_str(rtc_time).c_str());
       }
     }
-  } else if (dir == SYNC_FROM_PANDA) {
+  } else if (dir == SyncTimeDir::SYNC_FROM_PANDA) {
     if (!util::time_valid(sys_time) && util::time_valid(rtc_time)) {
       const struct timeval tv = {mktime(&rtc_time), 0};
       settimeofday(&tv, 0);
@@ -200,7 +200,7 @@ Panda *usb_connect(std::string serial="", uint32_t index=0) {
   std::call_once(connected_once, &Panda::set_usb_power_mode, panda, cereal::PeripheralState::UsbPowerMode::CDP);
 #endif
 
-  sync_time(panda.get(), SYNC_FROM_PANDA);
+  sync_time(panda.get(), SyncTimeDir::SYNC_FROM_PANDA);
   return panda.release();
 }
 
@@ -534,7 +534,7 @@ void peripheral_control_thread(Panda *panda) {
 
     // Write to rtc once per minute when no ignition present
     if (!ignition && (cnt % 120 == 1)) {
-      sync_time(panda, SYNC_TO_PANDA);
+      sync_time(panda, SyncTimeDir::SYNC_TO_PANDA);
     }
   }
 }