diff --git a/src/plot.h b/src/plot.h
--- a/src/plot.h
+++ b/src/plot.h
@@ -1,5 +1,5 @@
 /*
-  Copyright © 2017 Hasan Yavuz Özderya
+  Copyright © 2018 Hasan Yavuz Özderya
 
   This file is part of serialplot.
 
@@ -47,7 +47,7 @@ public:
         ShowSymbolsHide
     };
 
-    Plot(QWidget* parent = 0);
+    Plot(const Stream* stream, QWidget* parent = 0);
     ~Plot();
 
 public slots: