diff --git a/api/Print.h b/api/Print.h
index 2016d7d5..8b45f603 100644
--- a/api/Print.h
+++ b/api/Print.h
@@ -43,6 +43,7 @@ class Print
     void setWriteError(int err = 1) { write_error = err; }
   public:
     Print() : write_error(0) {}
+    virtual ~Print() { }
 
     int getWriteError() { return write_error; }
     void clearWriteError() { setWriteError(0); }