diff --git a/jl-cours/mdtheorem.tex b/jl-cours/mdtheorem.tex
index c45e3e0..e1b1e93 100644
--- a/jl-cours/mdtheorem.tex
+++ b/jl-cours/mdtheorem.tex
@@ -143,7 +143,7 @@
 }
 
 % vocabulaire
-\mdtheorem[style=pencil, theoremseparator={},
+\mdtheorem[style=noborder, theoremseparator={},
            theoremspace={}]{@voc1}{\Jd Vocabulaire}
 \mdtheorem[style=nologo, theoremseparator={},
           theoremspace={}]{@voc2}{\Jd Vocabulaire}