diff --git a/src/LR0.cpp b/src/LR0.cpp
index 19d9b6ae..c3a8f82c 100644
--- a/src/LR0.cpp
+++ b/src/LR0.cpp
@@ -68,6 +68,12 @@ void LR0::createParseTables (const Grammar& grammar)
 
 
 
+}
+
+////////////////////////////////////////////////////////////////////////////////
+void LR0::debug (bool value)
+{
+  _debug = value;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
diff --git a/src/LR0.h b/src/LR0.h
index 28bf3130..69308ad6 100644
--- a/src/LR0.h
+++ b/src/LR0.h
@@ -36,6 +36,7 @@ class LR0
 public:
   LR0 ();
   void createParseTables (const Grammar&);
+  void debug (bool);
   std::string dump () const;
 
 private:
@@ -43,6 +44,8 @@ private:
   //        |              |            |
   std::map <int, std::map <std::string, std::string>> _actions;
   std::map <int, std::map <std::string, std::string>> _goto;
+
+  bool _debug;
 };
 
 #endif