diff --git a/wp-includes/query.php b/wp-includes/query.php
index 4b3e1e41f7..7bebfb4932 100644
--- a/wp-includes/query.php
+++ b/wp-includes/query.php
@@ -2194,8 +2194,8 @@ class WP_Query {
 			else
 				$term = trim( $term, "\"' " );
 
-			// Avoid single A-Z.
-			if ( ! $term || ( 1 === strlen( $term ) && preg_match( '/^[a-z]$/i', $term ) ) )
+			// Avoid single A-Z and single dashes.
+			if ( ! $term || ( 1 === strlen( $term ) && preg_match( '/^[a-z\-]$/i', $term ) ) )
 				continue;
 
 			if ( in_array( call_user_func( $strtolower, $term ), $stopwords, true ) )
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 6e34d63cfe..da0901a8c1 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.5-beta3-36988';
+$wp_version = '4.5-beta3-36989';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.