diff --git a/src/eapol_supp/eapol_supp_sm.c b/src/eapol_supp/eapol_supp_sm.c
index 0dc7ea660..c8bb3030d 100644
--- a/src/eapol_supp/eapol_supp_sm.c
+++ b/src/eapol_supp/eapol_supp_sm.c
@@ -2155,16 +2155,14 @@ int eapol_sm_failed(struct eapol_sm *sm)
 }
 
 
+#ifdef CONFIG_EAP_PROXY
 int eapol_sm_get_eap_proxy_imsi(struct eapol_sm *sm, char *imsi, size_t *len)
 {
-#ifdef CONFIG_EAP_PROXY
 	if (sm->eap_proxy == NULL)
 		return -1;
 	return eap_proxy_get_imsi(sm->eap_proxy, imsi, len);
-#else /* CONFIG_EAP_PROXY */
-	return -1;
-#endif /* CONFIG_EAP_PROXY */
 }
+#endif /* CONFIG_EAP_PROXY */
 
 
 void eapol_sm_erp_flush(struct eapol_sm *sm)