diff --git a/src/components/battery/BatteryController.cpp b/src/components/battery/BatteryController.cpp
index c875cb8d..300d0978 100644
--- a/src/components/battery/BatteryController.cpp
+++ b/src/components/battery/BatteryController.cpp
@@ -3,6 +3,7 @@
 #include <hal/nrf_gpio.h>
 #include <nrfx_saadc.h>
 #include <algorithm>
+#include <cmath>
 
 using namespace Pinetime::Controllers;