diff --git a/src/LR0.cpp b/src/LR0.cpp
index 9b162430..f7b365b8 100644
--- a/src/LR0.cpp
+++ b/src/LR0.cpp
@@ -129,7 +129,7 @@ LR0::Closure LR0::getClosure (const std::string& symbol) const
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-bool LR0::closeState (States& states, const int state) const
+void LR0::closeState (States& states, const int state) const
 {
   std::cout << "# LR0::closeState " << state << "\n";
 
@@ -161,8 +161,6 @@ bool LR0::closeState (States& states, const int state) const
     states.push_back (closure);
     closeState (states, states.size () - 1);
   }
-
-  return false;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
diff --git a/src/LR0.h b/src/LR0.h
index 8e10f60e..a4ad5262 100644
--- a/src/LR0.h
+++ b/src/LR0.h
@@ -70,7 +70,7 @@ public:
 private:
   std::set <std::string> getExpectedSymbols (const Closure&) const;
   Closure getClosure (const std::string&) const;
-  bool closeState (States&, const int) const;
+  void closeState (States&, const int) const;
 
 private:
   // Copy of the augmented grammar.