diff --git a/wp-includes/class-wp-term-query.php b/wp-includes/class-wp-term-query.php
index 2d3d085af3..565c1e6268 100644
--- a/wp-includes/class-wp-term-query.php
+++ b/wp-includes/class-wp-term-query.php
@@ -219,7 +219,7 @@ class WP_Term_Query {
 			$query = $this->query_vars;
 		}
 
-		$taxonomies = isset( $query['taxonomy'] ) ? $query['taxonomy'] : null;
+		$taxonomies = isset( $query['taxonomy'] ) ? (array) $query['taxonomy'] : null;
 
 		/**
 		 * Filters the terms query default arguments.
diff --git a/wp-includes/version.php b/wp-includes/version.php
index af76681ff7..899d6b70ef 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.7-alpha-38179';
+$wp_version = '4.7-alpha-38181';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.