diff --git a/regamedll/dlls/multiplay_gamerules.cpp b/regamedll/dlls/multiplay_gamerules.cpp
index 4f4899712..6f79f70f6 100644
--- a/regamedll/dlls/multiplay_gamerules.cpp
+++ b/regamedll/dlls/multiplay_gamerules.cpp
@@ -5276,7 +5276,7 @@ int CHalfLifeMultiplay::GetRarityOfKill(CBaseEntity *pKiller, CBasePlayer *pVict
 		// That is done so that the domination and revenge will be calculated prior
 		// to the death message being sent to the clients
 		int iAttackerEntityIndex = pKillerPlayer->entindex();
-		assert(iAttackerEntityIndex >= 0 && iAttackerEntityIndex < MAX_CLIENTS);
+		assert(iAttackerEntityIndex > 0 && iAttackerEntityIndex <= MAX_CLIENTS);
 
 		int iKillsUnanswered = pVictim->CSPlayer()->m_iNumKilledByUnanswered[iAttackerEntityIndex - 1] + 1;
 		if (iKillsUnanswered == CS_KILLS_FOR_DOMINATION || pKillerPlayer->CSPlayer()->IsPlayerDominated(pVictim->entindex() - 1))
diff --git a/regamedll/public/regamedll/API/CSPlayer.h b/regamedll/public/regamedll/API/CSPlayer.h
index 476b20013..a975bcc9b 100644
--- a/regamedll/public/regamedll/API/CSPlayer.h
+++ b/regamedll/public/regamedll/API/CSPlayer.h
@@ -207,6 +207,6 @@ inline bool CCSPlayer::IsPlayerDominated(int iPlayerIndex) const
 inline void CCSPlayer::SetPlayerDominated(CBasePlayer *pPlayer, bool bDominated)
 {
 	int iPlayerIndex = pPlayer->entindex();
-	assert(iPlayerIndex >= 0 && iPlayerIndex < MAX_CLIENTS);
+	assert(iPlayerIndex > 0 && iPlayerIndex <= MAX_CLIENTS);
 	m_bPlayerDominated[iPlayerIndex - 1] = bDominated;
 }