diff --git a/include/camera/CaptureResult.h b/include/camera/CaptureResult.h
index 6e47a16..0be7d6f 100644
--- a/include/camera/CaptureResult.h
+++ b/include/camera/CaptureResult.h
@@ -53,6 +53,11 @@
     int64_t frameNumber;
 
     /**
+     * The partial result count (index) for this capture result.
+     */
+    int32_t partialResultCount;
+
+    /**
      * Constructor initializes object as invalid by setting requestId to be -1.
      */
     CaptureResultExtras()
@@ -60,7 +65,8 @@
           burstId(0),
           afTriggerId(0),
           precaptureTriggerId(0),
-          frameNumber(0) {
+          frameNumber(0),
+          partialResultCount(0) {
     }
 
     /**