diff --git a/wpa_supplicant/config_file.c b/wpa_supplicant/config_file.c
index 4dc4d123d..618e5243d 100644
--- a/wpa_supplicant/config_file.c
+++ b/wpa_supplicant/config_file.c
@@ -790,7 +790,8 @@ static void wpa_config_write_cred(FILE *f, struct wpa_cred *cred)
 		const char *name;
 		name = eap_get_name(cred->eap_method[0].vendor,
 				    cred->eap_method[0].method);
-		fprintf(f, "\teap=%s\n", name);
+		if (name)
+			fprintf(f, "\teap=%s\n", name);
 	}
 	if (cred->phase1)
 		fprintf(f, "\tphase1=\"%s\"\n", cred->phase1);