diff --git a/src/engine/server/antibot.cpp b/src/engine/server/antibot.cpp
index 90c08e9d7..da76d0bed 100644
--- a/src/engine/server/antibot.cpp
+++ b/src/engine/server/antibot.cpp
@@ -225,7 +225,7 @@ void CAntibot::OnPlayerDestroy(int ClientID) {}
 void CAntibot::OnSpawn(int ClientID) {}
 void CAntibot::OnHammerFireReloading(int ClientID) {}
 void CAntibot::OnHammerFire(int ClientID) {}
-void CAntibot::OnHammerHit(int ClientID) {}
+void CAntibot::OnHammerHit(int ClientID, int TargetID) {}
 void CAntibot::OnDirectInput(int ClientID) {}
 void CAntibot::OnCharacterTick(int ClientID) {}
 void CAntibot::OnHookAttach(int ClientID, bool Player) {}