diff --git a/common/init.php b/common/init.php
index 2368761..93fb94e 100644
--- a/common/init.php
+++ b/common/init.php
@@ -6,39 +6,17 @@ define("SERVICE", substr(dirname($_SERVER['PHP_SELF']), strlen(CONF['common']['p
 define("PAGE", basename($_SERVER['PHP_SELF'], '.php'));
 define("DB_PATH", CONF['common']['root_path'] . "/db/niver.db"); // Niver's SQLite database
 
-// Service-specific functions and constants
-if (SERVICE === "reg" OR SERVICE === "ns")
-	require CONF['common']['root_path'] . "/dns.php";
-if (SERVICE !== "")
-	require CONF['common']['root_path'] . "/" . SERVICE . ".php";
-
 // Page titles definition
 require "pages.php";
 
+require CONF['common']['root_path'] . "/fn/common.php";
+// Service-specific functions and constants
+if (SERVICE === "reg" OR SERVICE === "ns")
+	require CONF['common']['root_path'] . "/fn/dns.php";
+if (SERVICE !== "")
+	require CONF['common']['root_path'] . "/fn/" . SERVICE . ".php";
+
 function success($msg) {
 	echo "<p><strong>Succès</strong> : <em>" . $msg . "</em></p>";
 	closeHTML();
 }
-
-// When the user requests something unexpected
-function userError($msg) {
-	http_response_code(403);
-	echo "<p><strong>Erreur utilisataire</strong> : <em>" . $msg . "</em></p>";
-	closeHTML();
-}
-
-// When the system did something unexpected
-function serverError($msg) {
-	http_response_code(500);
-	error_log("Niver internal error: " . strip_tags($msg));
-	echo "<p><strong>Server error</strong>: The server encountered an error: <em>" . $msg . "</em></p>";
-	closeHTML();
-}
-
-// For use in pages that first display a form and then process it
-function switchToFormProcess($requireLogin = true) {
-	if (empty($_POST))
-		closeHTML();
-	if ($requireLogin AND !isset($_SESSION['username']))
-		userError("Vous devez être connecté·e pour effectuer cette action.");
-}
diff --git a/auth.php b/fn/auth.php
similarity index 100%
rename from auth.php
rename to fn/auth.php
diff --git a/fn/common.php b/fn/common.php
new file mode 100644
index 0000000..04a2f21
--- /dev/null
+++ b/fn/common.php
@@ -0,0 +1,24 @@
+<?php
+
+// When the user requests something unexpected
+function userError($msg) {
+	http_response_code(403);
+	echo "<p><strong>Erreur utilisataire</strong> : <em>" . $msg . "</em></p>";
+	closeHTML();
+}
+
+// When the system did something unexpected
+function serverError($msg) {
+	http_response_code(500);
+	error_log("Niver internal error: " . strip_tags($msg));
+	echo "<p><strong>Server error</strong>: The server encountered an error: <em>" . $msg . "</em></p>";
+	closeHTML();
+}
+
+// For use in pages that first display a form and then process it
+function switchToFormProcess($requireLogin = true) {
+	if (empty($_POST))
+		closeHTML();
+	if ($requireLogin AND !isset($_SESSION['username']))
+		userError("Vous devez être connecté·e pour effectuer cette action.");
+}
diff --git a/dns.php b/fn/dns.php
similarity index 100%
rename from dns.php
rename to fn/dns.php
diff --git a/ht.php b/fn/ht.php
similarity index 100%
rename from ht.php
rename to fn/ht.php
diff --git a/ns.php b/fn/ns.php
similarity index 100%
rename from ns.php
rename to fn/ns.php
diff --git a/reg.php b/fn/reg.php
similarity index 100%
rename from reg.php
rename to fn/reg.php