diff --git a/doc/ot_api_doc.h b/doc/ot_api_doc.h
index 335a6e6d4..9ba5282fe 100644
--- a/doc/ot_api_doc.h
+++ b/doc/ot_api_doc.h
@@ -72,6 +72,7 @@
  * @{
  *
  * @defgroup api-link-link            Link
+ * @defgroup api-link-metrics         Link Metrics
  * @defgroup api-link-raw             Raw Link
  *
  * @}
@@ -145,7 +146,6 @@
  * @{
  *
  * @defgroup plat-alarm               Alarm
- * @defgroup plat-ble                 BLE Host
  * @defgroup plat-entropy             Entropy
  * @defgroup plat-factory-diagnostics Factory Diagnostics
  * @defgroup plat-logging             Logging
diff --git a/include/openthread/instance.h b/include/openthread/instance.h
index 74eb2eeb2..8cbefe02d 100644
--- a/include/openthread/instance.h
+++ b/include/openthread/instance.h
@@ -53,7 +53,7 @@ extern "C" {
  * @note This number versions both OpenThread platform and user APIs.
  *
  */
-#define OPENTHREAD_API_VERSION (33)
+#define OPENTHREAD_API_VERSION (34)
 
 /**
  * @addtogroup api-instance
diff --git a/include/openthread/link_metrics.h b/include/openthread/link_metrics.h
index f750847f6..5209923ea 100644
--- a/include/openthread/link_metrics.h
+++ b/include/openthread/link_metrics.h
@@ -45,10 +45,10 @@ extern "C" {
 #endif
 
 /**
- * @addtogroup linkmetrics   Link Metrics
+ * @addtogroup api-link-metrics
  *
  * @brief
- *   This module includes functions that control Link Metrics protocol.
+ *   This module includes functions that control the Link Metrics protocol.
  *
  * @{
  *