diff --git a/pages/teaching/economic-calculus/index.org b/pages/teaching/economic-calculus/index.org
index a3f49a3..7cb96f2 100644
--- a/pages/teaching/economic-calculus/index.org
+++ b/pages/teaching/economic-calculus/index.org
@@ -38,6 +38,7 @@
   - Fiche de TD n°3 [[https://le-mans.adjemian.eu/calcul-%C3%A9conomique/td/3/td.pdf][{pdf}]]
     + Éléments de correction [[https://le-mans.adjemian.eu/calcul-%C3%A9conomique/td/3/correction.pdf][{pdf}]]
   - Fiche de TD n°4 [[https://le-mans.adjemian.eu/calcul-%C3%A9conomique/td/4/td.pdf][{pdf}]]
+    + Éléments de correction [[https://le-mans.adjemian.eu/calcul-%C3%A9conomique/td/4/correction.pdf][{pdf}]]
 * Sujets d'examen
   | Année | Sujet | Correction |
   |-------+-------+------------|