diff --git a/bin/launch-minecraft-server b/bin/launch-minecraft-server
index fd61d1a..14badca 100755
--- a/bin/launch-minecraft-server
+++ b/bin/launch-minecraft-server
@@ -1,5 +1,9 @@
-#!/bin/sh -ex
+#!/bin/sh -e
 cd /srv/minecraft/bin
-PATH=".:${PATH}"
-sudo -u minecraft screen "$1"
+if [ -f "$1" ]; then
+    sudo -u minecraft screen "./${1}"
+else
+    >&2 echo "Le serveur \"${1}\" n'existe pas."
+    false
+fi