diff --git a/camera/CameraParameters.cpp b/camera/CameraParameters.cpp
index 1e7abae..214cd4d 100644
--- a/camera/CameraParameters.cpp
+++ b/camera/CameraParameters.cpp
@@ -68,6 +68,8 @@
 const char CameraParameters::KEY_MAX_EXPOSURE_COMPENSATION[] = "max-exposure-compensation";
 const char CameraParameters::KEY_MIN_EXPOSURE_COMPENSATION[] = "min-exposure-compensation";
 const char CameraParameters::KEY_EXPOSURE_COMPENSATION_STEP[] = "exposure-compensation-step";
+const char CameraParameters::KEY_MAX_NUM_METERING_AREAS[] = "max-num-metering-areas";
+const char CameraParameters::KEY_METERING_AREAS[] = "metering-areas";
 const char CameraParameters::KEY_ZOOM[] = "zoom";
 const char CameraParameters::KEY_MAX_ZOOM[] = "max-zoom";
 const char CameraParameters::KEY_ZOOM_RATIOS[] = "zoom-ratios";