diff --git a/content.yml b/content.yml
index a388983..2160701 100644
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+++ b/content.yml
@@ -470,7 +470,8 @@ home:
         content: |
           The emission factors will be regularly updated. In April 2021, the emission factors 
           from ADEME were updated. The average emission factors for short, medium, long flights 
-          are considered.
+          are considered. The same data are considered by the 
+          Labos1.5 organisation (https://labos1point5.org/ges-1point5).
 
 
       - title: How are the different methods built? 
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