diff --git a/examples/math_exam/BAC2017.thy b/examples/math_exam/BAC2017.thy
index cbae2cf6..30ce30f2 100644
--- a/examples/math_exam/BAC2017.thy
+++ b/examples/math_exam/BAC2017.thy
@@ -5,7 +5,7 @@ begin
    
 open_monitor*[exam::MathExam] 
 
-section*[idir::Author,affiliation="''CentraleSupelec''", 
+section*[idir::Author,affiliation="''LRI, CentraleSupelec''", 
 email="''idir.aitsadoune@centralesupelec.fr''"]
 {*Idir AIT SADOUNE*}