diff --git a/src/Composite.cpp b/src/Composite.cpp
index 5c109a01..b80a4c50 100644
--- a/src/Composite.cpp
+++ b/src/Composite.cpp
@@ -137,3 +137,10 @@ std::string Composite::str (bool blend) const
 }
 
 ////////////////////////////////////////////////////////////////////////////////
+// So the same instance can be reused.
+void Composite::clear ()
+{
+  _layers.clear ();
+}
+
+////////////////////////////////////////////////////////////////////////////////
diff --git a/src/Composite.h b/src/Composite.h
index 1167d426..645bcfd0 100644
--- a/src/Composite.h
+++ b/src/Composite.h
@@ -38,6 +38,7 @@ public:
   Composite () = default;
   void add (const std::string&, std::string::size_type, const Color&);
   std::string str (bool blend = false) const;
+  void clear ();
 
 private:
   std::vector <std::tuple <std::string, std::string::size_type, Color>> _layers;