diff --git a/CHANGELOG.md b/CHANGELOG.md
index 23d95ba..8ce917a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@
 * Forward root's mails to new user email address.
 * Ensure to disable dangerous modules (firewire, thunderbolt, …).
 * Add the possibility to set the GRUB_TIMEOUT
+* Exit if no informations file is available.
 
 ### 0.3.0
 
diff --git a/post_install_sid.sh b/post_install_sid.sh
index a9b4d11..4c2dd35 100755
--- a/post_install_sid.sh
+++ b/post_install_sid.sh
@@ -175,7 +175,14 @@ OPTIONS=""
 grub_timeout='5'
 
 # Load additionnal informations (new_username, new_user_mail, …) and override some variables
-. ${script_path}/informations
+if [ -f ${script_path}/informations ]; then
+  . ${script_path}/informations
+else
+  printf '%b' "You should define a ${script_path}/informations file\n"
+  printf '%b' "Or simply copy the template:\n"
+  printf '%b' "cp ${script_path}/Informations.template ${script_path}/informations\n"
+  exit 1
+fi
 
 # Fin des variables globales
 # -----------------------------------------------------------