diff --git a/src/gps/GPS.cpp b/src/gps/GPS.cpp
index 7d7de8700..147b07594 100644
--- a/src/gps/GPS.cpp
+++ b/src/gps/GPS.cpp
@@ -16,6 +16,7 @@
 #ifdef ARCH_PORTDUINO
 #include "PortduinoGlue.h"
 #include "meshUtils.h"
+#include <algorithm>
 #include <ctime>
 #endif