diff --git a/vyper/venom/parser.py b/vyper/venom/parser.py
index 5ccc29b7a4..2cd26c3126 100644
--- a/vyper/venom/parser.py
+++ b/vyper/venom/parser.py
@@ -64,7 +64,7 @@
     %ignore COMMENT
     """
 
-VENOM_PARSER = Lark(VENOM_GRAMMAR)
+VENOM_PARSER = Lark(VENOM_GRAMMAR, start = 'start', parser = 'lalr')
 
 
 def _set_last_var(fn: IRFunction):