diff --git a/wpa_supplicant/config_file.c b/wpa_supplicant/config_file.c
index e1e3a3102..2a323b064 100644
--- a/wpa_supplicant/config_file.c
+++ b/wpa_supplicant/config_file.c
@@ -592,6 +592,7 @@ static void wpa_config_write_network(FILE *f, struct wpa_ssid *ssid)
 	write_pairwise(f, ssid);
 	write_group(f, ssid);
 	write_auth_alg(f, ssid);
+	STR(bgscan);
 #ifdef IEEE8021X_EAPOL
 	write_eap(f, ssid);
 	STR(identity);