diff --git a/services/surfaceflinger/BufferStateLayer.h b/services/surfaceflinger/BufferStateLayer.h
index 175a40b..44a7bb5 100644
--- a/services/surfaceflinger/BufferStateLayer.h
+++ b/services/surfaceflinger/BufferStateLayer.h
@@ -173,6 +173,8 @@
     nsecs_t mCallbackHandleAcquireTime = -1;
 
     std::deque<std::shared_ptr<android::frametimeline::SurfaceFrame>> mPendingJankClassifications;
+    // An upper bound on the number of SurfaceFrames in the pending classifications deque.
+    static constexpr int kPendingClassificationMaxSurfaceFrames = 25;
 
     const std::string mBlastTransactionName{"BufferTX - " + mName};
     // This integer is incremented everytime a buffer arrives at the server for this layer,