diff --git a/Changelog.txt b/Changelog.txt
index 7851b5d90..7cd80f591 100644
--- a/Changelog.txt
+++ b/Changelog.txt
@@ -3792,3 +3792,10 @@ Added: 'H' shortcut for variables to get the value as hexadecimal.
 
 26-06-2024, Jhobean
 - Changed: @NPCRESTOCK References modification. Now SRC:Server I:NPC (Before it was always server)
+
+30-06-2024, DavideRei
+- Fixed: hallucination spell duration (before it was fixed at 1000 seconds)
+- Fixed: wrong layer checked for potion delay to set the memory name
+- Modified: blocked spelleffect on ridden chars for spells with flag SPELLFLAG_FIELD or SPELLFLAG_AREA
+- Fixed: NPC_Act_Follow use combat target even if the npc is not in combat
+- Fixed: wrong highest threat when there are no attackers
diff --git a/src/game/chars/CCharAct.cpp b/src/game/chars/CCharAct.cpp
index 5d863ddb4..58fafeeb2 100644
--- a/src/game/chars/CCharAct.cpp
+++ b/src/game/chars/CCharAct.cpp
@@ -1593,7 +1593,7 @@ void CChar::SoundChar( CRESND_TYPE type )
 				default:
 					if (id < 0x4D6)			// before the crane sound the sound IDs are ordered in a way...
 						id += (SOUND_TYPE)type;
-					else if (id < 0x5D5)	// starting with the crane and ending before absymal infernal there's another scheme
+					else if (id < 0x5D4)	// starting with the crane and ending before absymal infernal there's another scheme
 					{
 						switch (type)
 						{
diff --git a/src/game/chars/CCharAttacker.cpp b/src/game/chars/CCharAttacker.cpp
index d582548d5..c43e8ecbd 100644
--- a/src/game/chars/CCharAttacker.cpp
+++ b/src/game/chars/CCharAttacker.cpp
@@ -116,7 +116,7 @@ int CChar::Attacker_GetHighestThreat() const
 {
     ADDTOCALLSTACK("CChar::Attacker_GetHighestThreat");
     if (m_lastAttackers.empty())
-        return -1;
+        return 0;
 
     int highThreat = 0;
     for (const LastAttackers & refAttacker : m_lastAttackers)
diff --git a/src/game/chars/CCharNPCAct.cpp b/src/game/chars/CCharNPCAct.cpp
index e316da040..4c24b8535 100644
--- a/src/game/chars/CCharNPCAct.cpp
+++ b/src/game/chars/CCharNPCAct.cpp
@@ -1279,8 +1279,10 @@ bool CChar::NPC_Act_Follow(bool fFlee, int maxDistance, bool fMoveAway)
 	//If the NPC action is following somebody, directly assign the character from  the m_Act_UID value. 
 	if (Skill_GetActive() == NPCACT_FOLLOW_TARG)
 		pChar = m_Act_UID.CharFind();
-	else
+	else if (Fight_IsActive())
 		pChar = m_Fight_Targ_UID.IsValidUID() ? m_Fight_Targ_UID.CharFind() : m_Act_UID.CharFind();
+    else
+        pChar = m_Act_UID.CharFind();
 	if (pChar == nullptr)
 	{
 		// free to do as i wish !
diff --git a/src/game/chars/CCharSpell.cpp b/src/game/chars/CCharSpell.cpp
index 0612646fd..33522ef2f 100644
--- a/src/game/chars/CCharSpell.cpp
+++ b/src/game/chars/CCharSpell.cpp
@@ -2042,7 +2042,7 @@ CItem * CChar::Spell_Effect_Create( SPELL_TYPE spell, LAYER_TYPE layer, int iEff
 	switch ( layer )
 	{
 		case LAYER_FLAG_Criminal:		pSpell->SetName("Criminal Timer");			break;
-		case LAYER_FLAG_Potion:			pSpell->SetName("Potion Cooldown");			break;
+		case LAYER_FLAG_PotionUsed:		pSpell->SetName("Potion Cooldown");			break;
 		case LAYER_FLAG_Drunk:			pSpell->SetName("Drunk Effect");			break;
 		case LAYER_FLAG_Hallucination:	pSpell->SetName("Hallucination Effect");	break;
 		case LAYER_FLAG_Murders:		pSpell->SetName("Murder Decay");			break;
@@ -3536,6 +3536,8 @@ bool CChar::OnSpellEffect( SPELL_TYPE spell, CChar * pCharSrc, int iSkillLevel,
 		return false;
 	if ( spell == SPELL_Poison_Field && IsStatFlag(STATF_POISONED) )
 		return false;
+    if (IsStatFlag(STATF_RIDDEN) && (pSpellDef->IsSpellType(SPELLFLAG_FIELD) || pSpellDef->IsSpellType(SPELLFLAG_AREA)))
+        return false;
 
 	iSkillLevel = (iSkillLevel / 2) + g_Rand.GetVal(iSkillLevel / 2);	// randomize the potency
 	int iEffect = g_Cfg.GetSpellEffect(spell, iSkillLevel);
@@ -3922,7 +3924,7 @@ bool CChar::OnSpellEffect( SPELL_TYPE spell, CChar * pCharSrc, int iSkillLevel,
 
 		case SPELL_Hallucination:
 		{
-			CItem * pItem = Spell_Effect_Create( spell, LAYER_FLAG_Hallucination, iEffect, 100*MSECS_PER_TENTH, pCharSrc );
+			CItem * pItem = Spell_Effect_Create( spell, LAYER_FLAG_Hallucination, iEffect, iDuration, pCharSrc );
             ASSERT(pItem);
 			pItem->m_itSpell.m_spellcharges = g_Rand.GetVal(30);
 		}