diff --git a/twidere.component.common/src/main/java/org/mariotaku/microblog/library/mastodon/api/MediaResources.java b/twidere.component.common/src/main/java/org/mariotaku/microblog/library/mastodon/api/MediaResources.java
index 42c3f6fce..56d762255 100644
--- a/twidere.component.common/src/main/java/org/mariotaku/microblog/library/mastodon/api/MediaResources.java
+++ b/twidere.component.common/src/main/java/org/mariotaku/microblog/library/mastodon/api/MediaResources.java
@@ -18,6 +18,8 @@
 
 package org.mariotaku.microblog.library.mastodon.api;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import org.mariotaku.microblog.library.MicroBlogException;
 import org.mariotaku.microblog.library.mastodon.model.Attachment;
 import org.mariotaku.restfu.annotation.method.POST;
@@ -33,6 +35,7 @@ public interface MediaResources {
 
     @POST("/v1/media")
     @BodyType(BodyType.MULTIPART)
-    Attachment uploadMediaAttachment(@Param("file") Body body) throws MicroBlogException;
+    Attachment uploadMediaAttachment(@NonNull @Param("file") Body body,
+                                     @Nullable @Param("description") String description) throws MicroBlogException;
 
 }
diff --git a/twidere/src/main/kotlin/org/mariotaku/twidere/task/twitter/UpdateStatusTask.kt b/twidere/src/main/kotlin/org/mariotaku/twidere/task/twitter/UpdateStatusTask.kt
index 911c64f69..941acf52f 100644
--- a/twidere/src/main/kotlin/org/mariotaku/twidere/task/twitter/UpdateStatusTask.kt
+++ b/twidere/src/main/kotlin/org/mariotaku/twidere/task/twitter/UpdateStatusTask.kt
@@ -745,17 +745,17 @@ class UpdateStatusTask(
                 chucked: Boolean, callback: UploadCallback?): SharedMediaUploadResult {
             val deleteOnSuccess = ArrayList<MediaDeletionItem>()
             val deleteAlways = ArrayList<MediaDeletionItem>()
-            val mediaIds = media.mapIndexedToArray { index, media ->
+            val mediaIds = media.mapIndexedToArray { index, item ->
                 val resp: Attachment
                 //noinspection TryWithIdenticalCatches
                 var body: MediaStreamBody? = null
                 try {
                     val sizeLimit = account.getMediaSizeLimit()
-                    body = getBodyFromMedia(context, media, sizeLimit, chucked,
+                    body = getBodyFromMedia(context, item, sizeLimit, chucked,
                             ContentLengthInputStream.ReadListener { length, position ->
                                 callback?.onUploadingProgressChanged(index, position, length)
                             })
-                    resp = mastodon.uploadMediaAttachment(body.body)
+                    resp = mastodon.uploadMediaAttachment(body.body, item.alt_text)
                 } catch (e: IOException) {
                     throw UploadException(e).apply {
                         this.deleteAlways = deleteAlways