diff --git a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/05.classical-mechanics/vector-analysis/textbook.fr.md b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/05.classical-mechanics/vector-analysis/textbook.fr.md
index d6819ad16..340892cb9 100644
--- a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/05.classical-mechanics/vector-analysis/textbook.fr.md
+++ b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/05.classical-mechanics/vector-analysis/textbook.fr.md
@@ -52,7 +52,7 @@ http://www.electropedia.org/iev/iev.nsf/index?openform&part=102<br>
 r to indicate in the text the equivalence with the international standard 
 if we wish to keep our notations and terms. Example :
 
-"élément scalaire de surface $`dA`$" au lieu de "surface élémentaire $`dS`$".
+"élément scalaire de surface $`dA`$" au lieu de "surface élémentaire ou infinitésimale $`dS`$".
 
 ---