diff --git a/src/Mobs/Wither.h b/src/Mobs/Wither.h
index fbea331d3..81c9df1b1 100644
--- a/src/Mobs/Wither.h
+++ b/src/Mobs/Wither.h
@@ -19,9 +19,6 @@ public:
 
 	/** Returns whether the wither is invulnerable to arrows. */
 	bool IsArmored(void) const;
-
-	/** Use the wither the invulnerable from the spawn? */
-	bool IsSpawnInvulnerable(void) const { return m_IsSpawnInvulnerable; }
 	
 	// cEntity overrides
 	virtual bool Initialize(cWorld * a_World) override;
diff --git a/src/Protocol/Protocol125.cpp b/src/Protocol/Protocol125.cpp
index 3951eb3e4..a23afb29a 100644
--- a/src/Protocol/Protocol125.cpp
+++ b/src/Protocol/Protocol125.cpp
@@ -2013,14 +2013,7 @@ void cProtocol125::WriteMobMetadata(const cMonster & a_Mob)
 		case cMonster::mtWither:
 		{
 			WriteByte(0x54); // Int at index 20
-			if (((const cWither &)a_Mob).IsSpawnInvulnerable())
-			{
-				WriteInt((Int32)((const cWither &)a_Mob).GetInvulnerableTicks());
-			}
-			else
-			{
-				WriteInt((Int32)0);
-			}
+			WriteInt((Int32)((const cWither &)a_Mob).GetWitherInvulnerableTicks());
 			WriteByte(0x66); // Float at index 6
 			WriteFloat((float)(a_Mob.GetHealth()));
 			break;
diff --git a/src/Protocol/Protocol17x.cpp b/src/Protocol/Protocol17x.cpp
index 311e770f9..80b161e3e 100644
--- a/src/Protocol/Protocol17x.cpp
+++ b/src/Protocol/Protocol17x.cpp
@@ -2820,14 +2820,7 @@ void cProtocol172::cPacketizer::WriteMobMetadata(const cMonster & a_Mob)
 		case cMonster::mtWither:
 		{
 			WriteByte(0x54); // Int at index 20
-			if (((const cWither &)a_Mob).IsSpawnInvulnerable())
-			{
-				WriteInt(((const cWither &)a_Mob).GetInvulnerableTicks());
-			}
-			else
-			{
-				WriteInt(0);
-			}
+			WriteInt(((const cWither &)a_Mob).GetWitherInvulnerableTicks());
 			WriteByte(0x66); // Float at index 6
 			WriteFloat((float)(a_Mob.GetHealth()));
 			break;
diff --git a/src/WorldStorage/NBTChunkSerializer.cpp b/src/WorldStorage/NBTChunkSerializer.cpp
index 0c4a1a430..46c6b8e92 100644
--- a/src/WorldStorage/NBTChunkSerializer.cpp
+++ b/src/WorldStorage/NBTChunkSerializer.cpp
@@ -516,14 +516,7 @@ void cNBTChunkSerializer::AddMonsterEntity(cMonster * a_Monster)
 			}
 			case cMonster::mtWither:
 			{
-				if (((const cWither *)a_Monster)->IsSpawnInvulnerable())
-				{
-					m_Writer.AddInt("Invul", ((const cWither *)a_Monster)->GetInvulnerableTicks());
-				}
-				else
-				{
-					m_Writer.AddInt("Invul", 0);
-				}
+				m_Writer.AddInt("Invul", ((const cWither *)a_Monster)->GetWitherInvulnerableTicks());
 				break;
 			}
 			case cMonster::mtWolf:
diff --git a/src/WorldStorage/WSSAnvil.cpp b/src/WorldStorage/WSSAnvil.cpp
index c21809270..4532a925a 100644
--- a/src/WorldStorage/WSSAnvil.cpp
+++ b/src/WorldStorage/WSSAnvil.cpp
@@ -2272,7 +2272,7 @@ void cWSSAnvil::LoadWitherFromNBT(cEntityList & a_Entities, const cParsedNBT & a
 	int CurrLine = a_NBT.FindChildByName(a_TagIdx, "Invul");
 	if (CurrLine > 0)
 	{
-		Monster->SetInvulnerableTicks(a_NBT.GetInt(CurrLine));
+		Monster->SetWitherInvulnerableTicks(a_NBT.GetInt(CurrLine));
 	}
 
 	a_Entities.push_back(Monster.release());