diff --git a/sphinx/writers/html.py b/sphinx/writers/html.py
index 6dd8bafe5..8d02793e3 100644
--- a/sphinx/writers/html.py
+++ b/sphinx/writers/html.py
@@ -89,6 +89,7 @@ class HTMLTranslator(BaseTranslator):
         self.param_separator = ''
         self.optional_param_level = 0
         self._table_row_index = 0
+        self._fieldlist_row_index = 0
         self.required_params_left = 0
 
     def visit_start_of_file(self, node):