diff --git a/README.md b/README.md
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 [![CC BY 4.0][cc-by-shield]][cc-by]  
-[![CC BY NC 4.0][cc-by-nc-shield]][cc-by-nc] lecture only 
+[![CC BY NC SA 4.0][cc-by-nc-sa-shield]][cc-by-nc-sa] lecture only 
 
 # Initiation à Linux/Unix
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