diff --git a/likecoin/admin/matters.php b/likecoin/admin/matters.php
index 20b19f7f..6c6557c6 100644
--- a/likecoin/admin/matters.php
+++ b/likecoin/admin/matters.php
@@ -452,7 +452,7 @@ function likecoin_save_to_matters( $post_id, $post, $update = true ) {
 	}
 	$matters_draft_id = isset( $matters_info['draft_id'] ) ? $matters_info['draft_id'] : null;
 	$title            = apply_filters( 'the_title_rss', $post->post_title );
-	$tags             = likecoin_get_post_tags( $post );
+	$tags             = likecoin_get_post_tags( $post, 5 );
 
 	$api = LikeCoin_Matters_API::get_instance();
 	if ( $update && $matters_draft_id ) {
@@ -507,7 +507,7 @@ function likecoin_publish_to_matters( $post_id, $post ) {
 	}
 	$matters_draft_id = isset( $matters_info['draft_id'] ) ? $matters_info['draft_id'] : null;
 	$title            = apply_filters( 'the_title_rss', $post->post_title );
-	$tags             = likecoin_get_post_tags( $post );
+	$tags             = likecoin_get_post_tags( $post, 5 );
 	$api              = LikeCoin_Matters_API::get_instance();
 	if ( ! $matters_draft_id ) {
 		$content = likecoin_filter_matters_post_content( $post );
diff --git a/likecoin/admin/post.php b/likecoin/admin/post.php
index fa49d18a..0bbc4084 100644
--- a/likecoin/admin/post.php
+++ b/likecoin/admin/post.php
@@ -167,8 +167,9 @@ function likecoin_get_default_post_style() {
  * Get all tags names in a post
  *
  * @param WP_Post| $post Post object.
+ * @param integer| $limit Number of tags.
  */
-function likecoin_get_post_tags( $post ) {
+function likecoin_get_post_tags( $post, $limit = 0 ) {
 	$post_id   = $post->ID;
 	$func      = function( $terms ) {
 		return htmlspecialchars_decode( $terms->name );
@@ -178,7 +179,11 @@ function likecoin_get_post_tags( $post ) {
 	if ( ! $post_tags ) {
 		$post_tags = array();
 	}
-	return array_map( $func, $post_tags );
+	$result = array_map( $func, $post_tags );
+	if ( $limit ) {
+		$result = array_slice( $result, 0, $limit );
+	}
+	return $result;
 }
 
 /**