diff --git a/frontend/main.go b/frontend/main.go
index 32266c77..f2816649 100644
--- a/frontend/main.go
+++ b/frontend/main.go
@@ -7,6 +7,7 @@ import (
 	"net/http"
 	"os"
 	"path"
+	"strings"
 
 	fronttime "srs.epita.fr/fic-server/frontend/time"
 	"srs.epita.fr/fic-server/settings"
@@ -14,7 +15,7 @@ import (
 
 func main() {
 	var bind = flag.String("bind", "127.0.0.1:8080", "Bind port/socket")
-	var prefix = flag.String("prefix", "", "Request path prefix to strip (from proxy)")
+	var prefix = flag.String("prefix", "/", "Request path prefix to strip (from proxy)")
 	var teamsDir = flag.String("teams", "./TEAMS/", "Base directory where find existing teams")
 	flag.StringVar(&SettingsDir, "settings", "./SETTINGS/", "Base directory where load and save settings")
 	flag.StringVar(&SubmissionDir, "submission", "./submissions/", "Base directory where save submissions")
@@ -32,6 +33,8 @@ func main() {
 		}
 	}
 
+	*prefix = strings.TrimRight(*prefix, "/")
+
 	// Load configuration
 	settings.LoadAndWatchSettings(path.Join(SettingsDir, settings.SettingsFile), reloadSettings)