diff --git a/wpa_supplicant/wps_supplicant.c b/wpa_supplicant/wps_supplicant.c
index 5fd94e289..d903128ba 100644
--- a/wpa_supplicant/wps_supplicant.c
+++ b/wpa_supplicant/wps_supplicant.c
@@ -815,8 +815,10 @@ void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
 	os_free(wpa_s->wps);
 	wpa_s->wps = NULL;
 
+#ifdef CONFIG_WPS_ER
 	wps_er_deinit(wpa_s->wps_er);
 	wpa_s->wps_er = NULL;
+#endif /* CONFIG_WPS_ER */
 }