diff --git a/fbpcf/mpc_std_lib/walr_multiplication/OTBasedMatrixMultiplicationFactory.h b/fbpcf/mpc_std_lib/walr_multiplication/OTBasedMatrixMultiplicationFactory.h
index 8b1849b7..86b645f0 100644
--- a/fbpcf/mpc_std_lib/walr_multiplication/OTBasedMatrixMultiplicationFactory.h
+++ b/fbpcf/mpc_std_lib/walr_multiplication/OTBasedMatrixMultiplicationFactory.h
@@ -28,8 +28,7 @@ class OTBasedMatrixMultiplicationFactory final
  public:
   const std::string metricRecorderNamePrefix = "ot_based_matrix_multiplication";
 
-  // The following constructor will be deprecated once we updated all APP codes
-  explicit OTBasedMatrixMultiplicationFactory(
+  [[deprecated("Use the constructor with MetricCollector instead.")]] explicit OTBasedMatrixMultiplicationFactory(
       int myId,
       int partnerId,
       bool isFeatureOwner,