diff --git a/wp-admin/includes/ajax-actions.php b/wp-admin/includes/ajax-actions.php
index 071514453d..a4835b77e5 100644
--- a/wp-admin/includes/ajax-actions.php
+++ b/wp-admin/includes/ajax-actions.php
@@ -819,17 +819,20 @@ function wp_ajax_add_tag() {
  * @since 3.1.0
  */
 function wp_ajax_get_tagcloud() {
-	if ( isset( $_POST['tax'] ) ) {
-		$taxonomy = sanitize_key( $_POST['tax'] );
-		$tax = get_taxonomy( $taxonomy );
-		if ( ! $tax )
-			wp_die( 0 );
-		if ( ! current_user_can( $tax->cap->assign_terms ) )
-			wp_die( -1 );
-	} else {
+	if ( ! isset( $_POST['tax'] ) ) {
 		wp_die( 0 );
 	}
 
+	$taxonomy = sanitize_key( $_POST['tax'] );
+	$tax = get_taxonomy( $taxonomy );
+	if ( ! $tax ) {
+		wp_die( 0 );
+	}
+	
+	if ( ! current_user_can( $tax->cap->assign_terms ) ) {
+		wp_die( -1 );
+	}
+
 	$tags = get_terms( $taxonomy, array( 'number' => 45, 'orderby' => 'count', 'order' => 'DESC' ) );
 
 	if ( empty( $tags ) )
diff --git a/wp-includes/version.php b/wp-includes/version.php
index df17fe8fcd..4e5f512984 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.1-alpha-30167';
+$wp_version = '4.1-alpha-30168';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.