diff --git a/README.rst b/README.rst
index 1c7d21f..ae083c5 100644
--- a/README.rst
+++ b/README.rst
@@ -9,52 +9,47 @@ The book was later withdrawn from publication for security concerns (according t
 
 PyTmgpm is provided for educational purposes only, in the hope that it will be useful to understand the principles of tide calculations. **It must not by used for navigation.**
 
+
 Prerequisites
 -------------
 
 PyTmgpm was tested with Python 3.4 on Uubuntu 14.04. It should run fine with any Python 3.x flavors.
 
+
 Usage
 -----
 
 Firt import tmgpm (make sure it's on your PYTHONPATH)
 
-```
-#!python
+.. sourcecode:: python
 
-  import tmgpm
-
-```
+    import tmgpm
+    
 
 You can create a Tmgpm object, then set the station and date
 
-```
-#!python
+.. sourcecode:: python
 
-  tide = tmgpm.Tmgpm()
-  tide.set_station('CONCARNEAU')
-  tide.set_date(2014, 8, 15)      # 15th August 2014
+      tide = tmgpm.Tmgpm()
+      tide.set_station('CONCARNEAU')
+      tide.set_date(2014, 8, 15)      # 15th August 2014
+    
 
-```
-  
 Or you can create the object, set the station and date at the same time
 
-```
-#!python
-
-  tide = tmgpm.Tmgpm('CONCARNEAU', 2014, 8, 15)
+.. sourcecode:: python
 
-```
+      tide = tmgpm.Tmgpm('CONCARNEAU', 2014, 8, 15)
+    
 
 Calculate and print tide height at 09h30
 
-```
-#!python
+.. sourcecode:: python
 
-  h = tide.height(9.5) # You must provide time with decimal minutes (e.g. 9.5 for 09h30)
-  print(h)
+      h = tide.height(9.5) # You must provide time with decimal minutes (e.g. 9.5 for 09h30)
+      print(h)
+    
 
-```
 
 Copyright and license
 ---------------------