diff --git a/src/calibre/utils/search_query_parser.py b/src/calibre/utils/search_query_parser.py
index dbcfc7f13b..c67a02dcb4 100644
--- a/src/calibre/utils/search_query_parser.py
+++ b/src/calibre/utils/search_query_parser.py
@@ -221,8 +221,7 @@ class Parser(object):
             return ['and', lhs, self.and_expression()]
 
         # Account for the optional 'and'
-        if ((self.token_type() in [self.WORD, self.QUOTED_WORD] or self.token() == '(')
-                    and self.lcase_token() != 'or'):
+        if ((self.token_type() in [self.WORD, self.QUOTED_WORD] or self.token() == '(') and self.lcase_token() != 'or'):
             return ['and', lhs, self.and_expression()]
         return lhs