diff --git a/Monicelli.y b/Monicelli.y
index 79d38b7..e40c105 100644
--- a/Monicelli.y
+++ b/Monicelli.y
@@ -83,7 +83,7 @@ variable:
     ID | ARTICLE ID | ARTICLE STAR ID | STAR ID
 ;
 assign_stmt:
-    ID ASSIGN expression
+    variable ASSIGN expression
 ;
 print_stmt:
     expression PRINT