diff --git a/src/ipa/raspberrypi/controller/rpi/awb.cpp b/src/ipa/raspberrypi/controller/rpi/awb.cpp
index 6c2b627d234b..94629b121eb0 100644
--- a/src/ipa/raspberrypi/controller/rpi/awb.cpp
+++ b/src/ipa/raspberrypi/controller/rpi/awb.cpp
@@ -5,6 +5,8 @@
  * awb.cpp - AWB control algorithm
  */

+#include <functional>
+
 #include <libcamera/base/log.h>

 #include "../lux_status.h"