diff --git a/src/ipa/raspberrypi/controller/rpi/contrast.hpp b/src/ipa/raspberrypi/controller/rpi/contrast.hpp
index b74e06ab..7eb675ff 100644
--- a/src/ipa/raspberrypi/controller/rpi/contrast.hpp
+++ b/src/ipa/raspberrypi/controller/rpi/contrast.hpp
@@ -43,7 +43,7 @@ private:
 	ContrastConfig config_;
 	double brightness_;
 	double contrast_;
-	ContrastStatus status_;
+	ContrastStatus status_ LIBCAMERA_TSA_GUARDED_BY(mutex_);
 	libcamera::Mutex mutex_;
 };