diff --git a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/04.reference-frames-coordinate-systems/textbook.fr.md b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/04.reference-frames-coordinate-systems/textbook.fr.md
index 5f238322f..ac526014f 100644
--- a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/04.reference-frames-coordinate-systems/textbook.fr.md
+++ b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/04.reference-frames-coordinate-systems/textbook.fr.md
@@ -663,7 +663,7 @@ of their norms.
 
 
 * **N3 ($`\rightarrow`$ N4)**<br>
-<br>http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=102-05-06.<br>
+http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=102-05-06.<br>
 [ES] Según la dirección elegida, los **elementos escalares de superficie $`dA`$** 
 en coordenadas cilíndricas son :<br>
 [FR] Selon la direction choisie, les **éléments scalaires de surface $`dA`$** en