diff --git a/README.md b/README.md
index 5704c9f..5899b53 100644
--- a/README.md
+++ b/README.md
@@ -8,17 +8,17 @@ Signal Chain (SCh) is a radar data processing library developed using [Python](w
 
 Install system dependencies, clone the latest version from [git](http://jro-dev.igp.gob.pe/rhodecode/schain/) and install it as a normal python package.
 
+### Linux based system
 ```
 $ sudo apt-get install python-pip python-dev gfortran libpng-dev freetype* libblas-dev liblapack-dev libatlas-base-dev python-qt4 python-tk libssl-dev libhdf5-dev
 $ sudo pip install numpy
 $ git clone http://jro-dev.igp.gob.pe/rhodecode/schain/
 $ cd schain
 $ sudo pip install ./
-```
-
-**Its recommended to install schain in a virtual environment**
 
 ```
+**It is recommended to install schain in a virtual environment**
+```
 $ sudo pip install virtualenv
 $ virtualenv /path/to/virtual --system-site-packages
 $ source /path/to/virtual/bin/activate
@@ -26,6 +26,20 @@ $ source /path/to/virtual/bin/activate
 (virtual) $ pip install ./
 ```
 
+### MAC Os 
+```
+$ brew install cartr/qt4/pyqt
+$ git clone http://jro-dev.igp.gob.pe/rhodecode/schain/
+$ cd schain
+$ pip install ./
+```
+
+if ```pip install ./``` does not work, install a proper python enviroment, and repeat the steps.
+```
+$ brew install python
+```
+
+
 ## First Script
 
 Read Spectra data (.pdata) - remove dc - plot spectra & RTI