diff --git a/cryptide_project/server/api/controllers/SessionController.js b/cryptide_project/server/api/controllers/SessionController.js
index e0993b0..653389c 100644
--- a/cryptide_project/server/api/controllers/SessionController.js
+++ b/cryptide_project/server/api/controllers/SessionController.js
@@ -37,7 +37,10 @@ class SessionController {
             nbGamesEF = nbGamesEF.nbGames || 0;
             let nbWinsEF = await db.getNbWinsEnigmeByUserId(req.session.user.idUser, ENIGME_FACILE);
             nbWinsEF = nbWinsEF.nbWins || 0;
-            let ratioEF = (nbWinsEF.nbWins / nbGamesEF.nbGames) * 100 || 0;
+            let ratioEF = 0;
+            if (nbWinsEF.nbWins > 0){
+                ratioEF = (nbWinsEF.nbWins / nbGamesEF.nbGames) * 100;
+            }
             let bestTimeEF = await db.getBestTimeEnigmeByUserId(req.session.user.idUser, ENIGME_FACILE);
             bestTimeEF = bestTimeEF.bestTime || 0;
             let avgTimeEF = await db.getAvgTimeEnigmeByUserId(req.session.user.idUser, ENIGME_FACILE);
@@ -66,7 +69,10 @@ class SessionController {
             nbGamesED = nbGamesED.nbGames || 0;
             let nbWinsED = await db.getNbWinsEnigmeByUserId(req.session.user.idUser, ENIGME_DIFFICILE);
             nbWinsED = nbWinsED.nbWins || 0;
-            let ratioED = (nbWinsED.nbWins / nbGamesED.nbGames) * 100 || 0;
+            let ratioED = 0;
+            if (nbWinsED.nbWins > 0){
+                ratioED = (nbWinsED.nbWins / nbGamesED.nbGames) * 100;
+            }
             let bestTimeED = await db.getBestTimeEnigmeByUserId(req.session.user.idUser, ENIGME_DIFFICILE);
             bestTimeED = bestTimeED.bestTime || 0;
             let avgTimeED  = await db.getAvgTimeEnigmeByUserId(req.session.user.idUser, ENIGME_DIFFICILE);
@@ -83,7 +89,10 @@ class SessionController {
             nbGamesOL = nbGamesOL.nbGames || 0;
             let nbWinsOL = await db.getNbWinsOnlineByUserId(req.session.user.idUser);
             nbWinsOL = nbWinsOL.nbWins || 0;
-            let ratioOL = (nbWinsOL.nbWins / nbGamesOL.nbGames) * 100 || 0;
+            let ratioOL = 0
+            if (nbWinsOL.nbWins > 0){
+                ratioOL = (nbWinsOL.nbWins / nbGamesOL.nbGames) * 100;
+            }
             req.session.user.onlineStats = {nbGames: nbGamesOL, 
                                             nbWins: nbWinsOL, 
                                             ratio: ratioOL};