diff --git a/src/eap.c b/src/eap.c
index f605f432..b0fa72cf 100644
--- a/src/eap.c
+++ b/src/eap.c
@@ -676,6 +676,12 @@ int eap_unregister_method(struct eap_method *method)
 	return -ENOENT;
 }
 
+void __eap_set_config(struct l_settings *config)
+{
+	if (!l_settings_get_uint(config, "EAP", "mtu", &default_mtu))
+		default_mtu = 1400; /* on WiFi the real MTU is around 2304 */
+}
+
 static void __eap_method_enable(struct eap_method_desc *start,
 					struct eap_method_desc *stop)
 {
@@ -715,7 +721,7 @@ static void __eap_method_disable(struct eap_method_desc *start,
 extern struct eap_method_desc __start___eap[];
 extern struct eap_method_desc __stop___eap[];
 
-void eap_init(uint32_t mtu)
+void eap_init(void)
 {
 	eap_methods = l_queue_new();
 	__eap_method_enable(__start___eap, __stop___eap);
@@ -725,10 +731,8 @@ void eap_init(uint32_t mtu)
 	 * EAP is capable of functioning on lower layers that
 	 *        provide an EAP MTU size of 1020 octets or greater.
 	 */
-	if (mtu == 0)
+	if (default_mtu == 0)
 		default_mtu = 1020;
-	else
-		default_mtu = mtu;
 }
 
 void eap_exit(void)
diff --git a/src/eap.h b/src/eap.h
index de939cdc..8f128304 100644
--- a/src/eap.h
+++ b/src/eap.h
@@ -93,5 +93,7 @@ const char *eap_get_identity(struct eap_state *eap);
 
 void eap_rx_packet(struct eap_state *eap, const uint8_t *pkt, size_t len);
 
-void eap_init(uint32_t default_mtu);
+void __eap_set_config(struct l_settings *config);
+
+void eap_init(void);
 void eap_exit(void);
diff --git a/src/main.c b/src/main.c
index af6f0f74..1ff8d5d8 100644
--- a/src/main.c
+++ b/src/main.c
@@ -367,7 +367,6 @@ int main(int argc, char *argv[])
 	struct l_dbus *dbus;
 	const char *config_dir;
 	char **config_dirs;
-	uint32_t eap_mtu;
 	int i;
 
 	for (;;) {
@@ -465,9 +464,7 @@ int main(int argc, char *argv[])
 	l_strv_free(config_dirs);
 
 	__eapol_set_config(iwd_config);
-
-	if (!l_settings_get_uint(iwd_config, "EAP", "mtu", &eap_mtu))
-		eap_mtu = 1400; /* on WiFi the real MTU is around 2304 */
+	__eap_set_config(iwd_config);
 
 	exit_status = EXIT_FAILURE;
 
@@ -496,7 +493,7 @@ int main(int argc, char *argv[])
 	l_dbus_set_disconnect_handler(dbus, dbus_disconnected, NULL, NULL);
 	dbus_init(dbus);
 
-	eap_init(eap_mtu);
+	eap_init();
 
 	exit_status = l_main_run_with_signal(signal_handler, NULL);
 	plugin_exit();