diff --git a/Monicelli.y b/Monicelli.y
index 98c47cd..d626a17 100644
--- a/Monicelli.y
+++ b/Monicelli.y
@@ -2,6 +2,8 @@
 #include "Type.h"
 #include <stdlib.h>
 
+#define YYERROR_VERBOSE
+
 extern void emit(const char *, ...);
 %}