diff --git a/scripts/install b/scripts/install
index e608e1a..8d57fdb 100644
--- a/scripts/install
+++ b/scripts/install
@@ -69,7 +69,7 @@ ynh_app_setting_set "$app" is_public "$is_public"
 #=================================================
 
 # Find a free port
-port=(ynh_find_port "9000")
+port=$(ynh_find_port "9000")
 # Open this port
 yunohost firewall allow Both "$port" 2>&1
 ynh_app_setting_set "$app" port "$port"