diff --git a/zone/mob.cpp b/zone/mob.cpp
index 5f998347d..9764ba099 100644
--- a/zone/mob.cpp
+++ b/zone/mob.cpp
@@ -404,10 +404,11 @@ Mob::Mob(const char* in_name,
 	pStandingPetOrder = SPO_Follow;
 	pseudo_rooted = false;
 
-	see_invis = in_see_invis;
-	see_invis_undead = in_see_invis_undead != 0;
-	see_hide = in_see_hide != 0;
-	see_improved_hide = in_see_improved_hide != 0;
+	see_invis = GetSeeInvisible(in_see_invis);
+	see_invis_undead = GetSeeInvisible(in_see_invis_undead);
+	see_hide = GetSeeInvisible(in_see_hide);
+	see_improved_hide = GetSeeInvisible(in_see_improved_hide);
+
 	qglobal = in_qglobal != 0;
 
 	// Bind wound
@@ -5679,6 +5680,21 @@ float Mob::HeadingAngleToMob(float other_x, float other_y)
 		return (90.0f - angle + 270.0f) * 511.5f * 0.0027777778f;
 }
 
+bool Mob::GetSeeInvisible(uint8 see_invis)
+{
+	if(see_invis > 0)
+	{
+		if(see_invis == 1)
+			return true;
+		else
+		{
+			if (zone->random.Int(0, 99) < see_invis)
+				return true;
+		}
+	}
+	return false;
+}
+
 int32 Mob::GetSpellStat(uint32 spell_id, const char *identifier, uint8 slot)
 {
 	if (!IsValidSpell(spell_id))
diff --git a/zone/mob.h b/zone/mob.h
index 5561ef0da..422c76cd3 100644
--- a/zone/mob.h
+++ b/zone/mob.h
@@ -256,6 +256,7 @@ public:
 	inline bool SeeInvisibleUndead() const { return see_invis_undead; }
 	inline bool SeeHide() const { return see_hide; }
 	inline bool SeeImprovedHide() const { return see_improved_hide; }
+	inline bool GetSeeInvisible(uint8 see_invis);
 	bool IsInvisible(Mob* other = 0) const;
 	void SetInvisible(uint8 state);
 	EQEmu::skills::SkillType AttackAnimation(int Hand, const EQEmu::ItemInstance* weapon, EQEmu::skills::SkillType skillinuse = EQEmu::skills::Skill1HBlunt);