diff --git a/Doc/reference/grammar.rst b/Doc/reference/grammar.rst
index bc1db7b039c..b9cca4444c9 100644
--- a/Doc/reference/grammar.rst
+++ b/Doc/reference/grammar.rst
@@ -1,3 +1,5 @@
+.. _full-grammar-specification:
+
 Full Grammar specification
 ==========================