diff --git a/data/helpers.d/print b/data/helpers.d/print
index 95d2af139..f1120367a 100644
--- a/data/helpers.d/print
+++ b/data/helpers.d/print
@@ -201,6 +201,7 @@ previous_weight=0
 base_time=$(date +%s)
 ynh_script_progression () {
 	# Declare an array to define the options of this helper.
+	local legacy_args=mwtl
 	declare -Ar args_array=( [m]=message= [w]=weight= [t]=time [l]=last )
 	local message
 	local weight