diff --git a/src/core/thread/mle.cpp b/src/core/thread/mle.cpp
index 95abaf6c1..ec6163a89 100644
--- a/src/core/thread/mle.cpp
+++ b/src/core/thread/mle.cpp
@@ -2159,7 +2159,7 @@ Error Mle::SendLinkMetricsManagementResponse(const Ip6::Address &aDestination, L
     tlv.SetType(Tlv::kLinkMetricsManagement);
     statusSubTlv.SetType(LinkMetrics::SubTlv::kStatus);
     statusSubTlv.SetLength(sizeof(aStatus));
-    tlv.SetLength(statusSubTlv.GetSize());
+    tlv.SetLength(static_cast<uint8_t>(statusSubTlv.GetSize()));
 
     SuccessOrExit(error = message->Append(tlv));
     SuccessOrExit(error = message->Append(statusSubTlv));
diff --git a/tests/toranj/openthread-core-toranj-config.h b/tests/toranj/openthread-core-toranj-config.h
index 53bae9f8f..4db884191 100644
--- a/tests/toranj/openthread-core-toranj-config.h
+++ b/tests/toranj/openthread-core-toranj-config.h
@@ -80,6 +80,8 @@
 
 #define OPENTHREAD_CONFIG_DIAG_ENABLE 1
 
+#define OPENTHREAD_CONFIG_MLE_LINK_METRICS_SUBJECT_ENABLE 1
+
 #define OPENTHREAD_CONFIG_JOINER_ENABLE 1
 
 #define OPENTHREAD_CONFIG_TMF_NETDATA_SERVICE_ENABLE 1