diff --git a/coreapi/proxy.c b/coreapi/proxy.c
index a4cf8f6fc..429712fdf 100644
--- a/coreapi/proxy.c
+++ b/coreapi/proxy.c
@@ -1479,7 +1479,7 @@ LinphoneNatPolicy * linphone_proxy_config_get_nat_policy(const LinphoneProxyConf
 
 void linphone_proxy_config_set_nat_policy(LinphoneProxyConfig *cfg, LinphoneNatPolicy *policy) {
 	if (policy != NULL) {
-		policy = linphone_nat_policy_ref(policy); /* Prevent object destruction if the same policy is used */
+		linphone_nat_policy_ref(policy); /* Prevent object destruction if the same policy is used */
 		policy->lc = cfg->lc;
 	}
 	if (cfg->nat_policy != NULL) linphone_nat_policy_unref(cfg->nat_policy);