diff --git a/rehlds/engine/sv_main.cpp b/rehlds/engine/sv_main.cpp
index 5466fcf..7ef7594 100644
--- a/rehlds/engine/sv_main.cpp
+++ b/rehlds/engine/sv_main.cpp
@@ -2387,7 +2387,7 @@ void SV_ConnectClient_internal(void)
 	host_client->userinfo[MAX_INFO_STRING - 1] = 0;
 
 	SV_ExtractFromUserinfo(host_client);
-	Info_SetValueForStarKey(host_client->userinfo, "*sid", va("%I64d", host_client->network_userid.m_SteamID), MAX_INFO_STRING);
+	Info_SetValueForStarKey(host_client->userinfo, "*sid", va("%lld", host_client->network_userid.m_SteamID), MAX_INFO_STRING);
 
 	host_client->datagram.flags = 1;
 	host_client->datagram.data = (byte *)host_client->datagram_buf;