diff --git a/server_files/classes/Tournament.php b/server_files/classes/Tournament.php
index 8b2cff0..102fb10 100644
--- a/server_files/classes/Tournament.php
+++ b/server_files/classes/Tournament.php
@@ -289,7 +289,7 @@ class Tournament
 		global $DB;
 
 		$req = $DB->query("SELECT * FROM `documents` AS `t1` "
-			. "INNER JOIN (SELECT `user`, `type`, `tournament`, MAX(`uploaded_at`) AS `last_upload`, COUNT(`team`) AS `version` FROM `documents` GROUP BY `tournament`, `team`, `type`) `t2` "
+			. "INNER JOIN (SELECT `user`, `type`, `tournament`, MAX(`uploaded_at`) AS `last_upload`, COUNT(`team`) AS `version` FROM `documents` GROUP BY `tournament`, `team`, `type`, `user`) `t2` "
 			. "ON `t1`.`user` = `t2`.`user` AND `t1`.`type` = `t2`.`type` AND `t1`.`tournament` = `t2`.`tournament` "
 			. "WHERE `t1`.`uploaded_at` = `t2`.`last_upload` AND `t1`.`tournament` = $this->id " . ($team_id == -1 ? "" : "AND `t1`.`team` = $team_id") . " ORDER BY `t1`.`team`, `t1`.`type`;");
 
diff --git a/server_files/classes/User.php b/server_files/classes/User.php
index 1852ea7..b037e12 100644
--- a/server_files/classes/User.php
+++ b/server_files/classes/User.php
@@ -364,7 +364,7 @@ class User
 	{
 		global $DB;
 		$req = $DB->query("SELECT * FROM `documents` AS `t1` "
-				. "INNER JOIN (SELECT `user`, `type`, `tournament`, MAX(`uploaded_at`) AS `last_upload`, COUNT(`team`) AS `version` FROM `documents` GROUP BY `tournament`, `type`) `t2` "
+			. "INNER JOIN (SELECT `user`, `type`, `tournament`, MAX(`uploaded_at`) AS `last_upload`, COUNT(`team`) AS `version` FROM `documents` GROUP BY `tournament`, `type`, `user`) `t2` "
 				. "ON `t1`.`user` = `t2`.`user` AND `t1`.`type` = `t2`.`type` AND `t1`.`tournament` = `t2`.`tournament` "
 				. "WHERE `t1`.`uploaded_at` = `t2`.`last_upload` AND `t1`.`tournament` = $tournament_id AND `t1`.`user` = $this->id ORDER BY `t1`.`type`;");
 
diff --git a/server_files/controllers/inscription.php b/server_files/controllers/inscription.php
index 1db055c..0d3f454 100644
--- a/server_files/controllers/inscription.php
+++ b/server_files/controllers/inscription.php
@@ -50,7 +50,7 @@ class NewUser
 
 		ensure(filter_var($this->email, FILTER_VALIDATE_EMAIL), "L'adresse e-mail entrée est invalide.");
 		$this->email = strtolower($this->email);
-		ensure(userExists($this->email), "Un compte existe déjà avec cette adresse e-mail.");
+		ensure(!userExists($this->email), "Un compte existe déjà avec cette adresse e-mail.");
 		ensure(strlen($this->password) >= 8, "Le mot de passe doit comporter au moins 8 caractères.");
 		ensure($this->password == $this->confirm_password, "Les deux mots de passe sont différents.");
 		ensure($this->surname != "", "Le nom de famille est obligatoire.");
diff --git a/server_files/model.php b/server_files/model.php
index ed0005d..b0004c4 100644
--- a/server_files/model.php
+++ b/server_files/model.php
@@ -57,7 +57,7 @@ function quitTeam() {
 	if ($role == Role::ADMIN || $role == Role::ORGANIZER)
 		return;
 
-	for ($i = 1; $i <= ($role == Role::ENCADRANT ? 6 : 2); ++$i)
+	for ($i = 1; $i <= ($role == Role::ENCADRANT ? 2 : 6); ++$i)
 		/** @noinspection SqlResolve */
 		$DB->exec("UPDATE `teams` SET `" . strtolower(Role::getName($role)) . "_$i` = NULL WHERE `" . strtolower(Role::getName($role)) . "_$i` = $user_id;");
 	$user->setTeamId(null);