diff --git a/src/libcamera/pipeline/ipu3/cio2.h b/src/libcamera/pipeline/ipu3/cio2.h
index 221cf817eee9..fa813a989fd2 100644
--- a/src/libcamera/pipeline/ipu3/cio2.h
+++ b/src/libcamera/pipeline/ipu3/cio2.h
@@ -50,6 +50,7 @@ public:
 	int stop();
 
 	CameraSensor *sensor() { return sensor_; }
+	const CameraSensor *sensor() const { return sensor_; }
 
 	int queueBuffer(Request *request, FrameBuffer *rawBuffer);
 	void tryReturnBuffer(FrameBuffer *buffer);