diff --git a/Lectures/L26_SpecViaUML/DataSet/include/DataSet.h b/Lectures/L26_SpecViaUML/DataSet/include/DataSet.h
index 60823d93f1b84767eba18e6259a7571c7e22bdec..d709321a22a716352d80b09094c47d44f69b89e5 100644
--- a/Lectures/L26_SpecViaUML/DataSet/include/DataSet.h
+++ b/Lectures/L26_SpecViaUML/DataSet/include/DataSet.h
@@ -13,10 +13,6 @@ class DataSet
     void add(double x);
     double getAverage();
     double getMaximum();
-
-  friend ostream &operator<<( ostream &output, const PointT &P ) { 
-         output << "x-coord: " << P.xc << "y-coord: " << P.yc;
-         return output;
 };
 
 #endif