1 files changed, 1 insertions, 0 deletions
diff --git a/parser.y b/parser.y
index 204b091..1f7487b 100644
--- a/parser.y
+++ b/parser.y
@@ -260,6 +260,7 @@ primary_exp(A) ::= T_NUMBER(B).							{ A = B; }
 primary_exp(A) ::= T_DOUBLE(B).							{ A = B; }
 primary_exp(A) ::= T_STRING(B).							{ A = B; }
 primary_exp(A) ::= T_LABEL(B).							{ A = B; }
+primary_exp(A) ::= T_NULL(B).							{ A = B; }
 primary_exp(A) ::= T_THIS(B).							{ A = B; }
 primary_exp(A) ::= array(B).							{ A = B; }
 primary_exp(A) ::= object(B).							{ A = B; }