diff --git a/data/helpers.d/network b/data/helpers.d/network
index e06656820..42616d513 100644
--- a/data/helpers.d/network
+++ b/data/helpers.d/network
@@ -5,7 +5,7 @@
 # usage: ynh_find_port begin_port
 # | arg: begin_port - port to start to search
 ynh_find_port () {
-	port=$(echo "$1" | sed 's/[^0-9]//g')	# Eliminate all non-digit characters
+	port=$1
 	test -n "$port" || ynh_die "The argument of ynh_find_port must be a valid port."
 	while netcat -z 127.0.0.1 $port       # Check if the port is free
 	do