diff --git a/Lecture 00_Introduction to Python.ipynb b/Lecture 00_Introduction to Python.ipynb
index efbe1d3..24914c5 100644
--- a/Lecture 00_Introduction to Python.ipynb	
+++ b/Lecture 00_Introduction to Python.ipynb	
@@ -319,7 +319,7 @@
     "In Ubuntu Linux, to installing python and all the requirements run:\n",
     "\n",
     "    $ sudo apt-get install python ipython ipython-notebook\n",
-    "$ sudo apt-get install python-numpy python-scipy python-matplotlib python-sympy\n",
+    "    $ sudo apt-get install python-numpy python-scipy python-matplotlib python-sympy\n",
     "    $ sudo apt-get install spyder"
    ]
   },