diff --git a/src/libosmo-mgcp/mgcp_msg.c b/src/libosmo-mgcp/mgcp_msg.c
index 7f05a44..45195de 100644
--- a/src/libosmo-mgcp/mgcp_msg.c
+++ b/src/libosmo-mgcp/mgcp_msg.c
@@ -193,7 +193,7 @@
 		return find_e1_endpoint(cfg, mgcp);
 
 	gw = strtoul(mgcp, &endptr, 16);
-	if (gw > 0 && gw < cfg->trunk.number_endpoints && endptr[0] == '@')
+	if (gw < cfg->trunk.number_endpoints && endptr[0] == '@')
 		return &cfg->trunk.endpoints[gw];
 
 	LOGP(DLMGCP, LOGL_ERROR, "Not able to find the endpoint: '%s'\n", mgcp);