diff --git a/notebooks/1_Introduction/helloworld.ipynb b/notebooks/1_Introduction/helloworld.ipynb
index a20405a5..9d7f0ace 100644
--- a/notebooks/1_Introduction/helloworld.ipynb
+++ b/notebooks/1_Introduction/helloworld.ipynb
@@ -59,7 +59,7 @@
    ],
    "source": [
     "# Run graph\n",
-    "print sess.run(hello)"
+    "print(sess.run(hello))"
    ]
   }
  ],
@@ -84,4 +84,4 @@
  },
  "nbformat": 4,
  "nbformat_minor": 0
-}
\ No newline at end of file
+}