diff --git a/scripts/_common.sh b/scripts/_common.sh
new file mode 100644
index 0000000..bb04a03
--- /dev/null
+++ b/scripts/_common.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+
+# ============= FUTURE YUNOHOST HELPER =============
+# Delete a file checksum from the app settings
+#
+# $app should be defined when calling this helper
+#
+# usage: ynh_remove_file_checksum file
+# | arg: file - The file for which the checksum will be deleted
+ynh_delete_file_checksum () {
+	local checksum_setting_name=checksum_${1//[\/ ]/_}	# Replace all '/' and ' ' by '_'
+	ynh_app_setting_delete $app $checksum_setting_name
+}
\ No newline at end of file
diff --git a/scripts/install b/scripts/install
index d1bb921..c63490d 100644
--- a/scripts/install
+++ b/scripts/install
@@ -25,7 +25,7 @@ source /usr/share/yunohost/helpers
 ynh_abort_if_errors
 
 
-
+################
 
 # Retrieve arguments
 	domain=$YNH_APP_ARG_DOMAIN