diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/crypto/model/MXUsersDevicesMap.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/crypto/model/MXUsersDevicesMap.kt
index c067a53dba..58481d8316 100755
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/crypto/model/MXUsersDevicesMap.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/crypto/model/MXUsersDevicesMap.kt
@@ -46,7 +46,7 @@ class MXUsersDevicesMap<E> {
     /**
      * Provides the object for a device id and a user Id.
      *
-     * @param userId   the object id
+     * @param userId   the user id
      * @param deviceId the device id
      * @return the object
      */
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/network/parsing/RuntimeJsonAdapterFactory.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/network/parsing/RuntimeJsonAdapterFactory.kt
index b5e5799f38..dd41b9f6fc 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/network/parsing/RuntimeJsonAdapterFactory.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/network/parsing/RuntimeJsonAdapterFactory.kt
@@ -123,7 +123,7 @@ internal class RuntimeJsonAdapterFactory<T>(
          * @param baseType The base type for which this factory will create adapters. Cannot be Object.
          * @param labelKey The key in the JSON object whose value determines the type to which to map the
          * JSON object.
-         * @param fallbackType
+         * @param fallbackType alternative Type to try in case of the serialization fails
          */
         @CheckReturnValue
         fun <T> of(baseType: Class<T>, labelKey: String, fallbackType: Class<out T>): RuntimeJsonAdapterFactory<T> {