diff --git a/scripts/.fonctions b/scripts/.fonctions
index 556d49d..d0ef578 100644
--- a/scripts/.fonctions
+++ b/scripts/.fonctions
@@ -249,50 +249,6 @@ ynh_make_valid_dbid () {
 	echo $dbid
 }
 
-# Manage a fail of the script
-#
-# Print a warning to inform that the script was failed
-# Execute the ynh_clean_setup function if used in the app script
-#
-# usage of ynh_clean_setup function
-# This function provide a way to clean some residual of installation that not managed by remove script.
-# To use it, simply add in your script:
-# ynh_clean_setup () {
-#        instructions...
-# }
-# This function is optionnal.
-#
-# Usage: ynh_exit_properly is used only by the helper ynh_check_error.
-# You must not use it directly.
-ynh_exit_properly () {
-	exit_code=$?
-	if [ "$exit_code" -eq 0 ]; then
-			exit 0	# Exit without error if the script ended correctly
-	fi
-
-	trap '' EXIT	# Ignore new exit signals
-	set +eu	# Do not exit anymore if a command fail or if a variable is empty
-
-	echo -e "!!\n  $app's script has encountered an error. Its execution was cancelled.\n!!" >&2
-
-	if type -t ynh_clean_setup > /dev/null; then	# Check if the function exist in the app script.
-		ynh_clean_setup	# Call the function to do specific cleaning for the app.
-	fi
-
-	ynh_die	# Exit with error status
-}
-
-# Exit if an error occurs during the execution of the script.
-#
-# Stop immediatly the execution if an error occured or if a empty variable is used.
-# The execution of the script is derivate to ynh_exit_properly function before exit.
-#
-# Usage: ynh_check_error
-ynh_check_error () {
-	set -eu	# Exit if a command fail, and if a variable is used unset.
-	trap ynh_exit_properly EXIT	# Capturing exit signals on shell script
-}
-
 # Install dependencies with a equivs control file
 #
 # usage: ynh_app_dependencies dep [dep [...]]