Index: wp-includes/query.php
===================================================================
--- wp-includes/query.php	(revision 36357)
+++ wp-includes/query.php	(working copy)
@@ -2787,15 +2787,17 @@
 			$search = $this->parse_search( $q );
 		}
 
-		/**
-		 * Filter the search SQL that is used in the WHERE clause of WP_Query.
-		 *
-		 * @since 3.0.0
-		 *
-		 * @param string   $search Search SQL for WHERE clause.
-		 * @param WP_Query $this   The current WP_Query object.
-		 */
-		$search = apply_filters_ref_array( 'posts_search', array( $search, &$this ) );
+                if ( !$q['suppress_filters'] ) {
+                        /**
+                         * Filter the search SQL that is used in the WHERE clause of WP_Query.
+                         *
+                         * @since 3.0.0
+                         *
+                         * @param string   $search Search SQL for WHERE clause.
+                         * @param WP_Query $this   The current WP_Query object.
+                         */
+                        $search = apply_filters_ref_array( 'posts_search', array( $search, &$this ) );
+                }
 
 		// Taxonomies
 		if ( !$this->is_singular ) {