diff --git a/src/main/java/com/replaymod/recording/packet/PacketListener.java b/src/main/java/com/replaymod/recording/packet/PacketListener.java
index 0f2e9520..19f5992a 100755
--- a/src/main/java/com/replaymod/recording/packet/PacketListener.java
+++ b/src/main/java/com/replaymod/recording/packet/PacketListener.java
@@ -46,6 +46,7 @@ import net.minecraft.client.network.packet.LoginSuccessS2CPacket;
 //#endif
 
 //#if MC>=10800
+import net.minecraft.client.network.packet.LoginCompressionS2CPacket;
 import net.minecraft.network.NetworkSide;
 //#endif
 
@@ -152,8 +153,12 @@ public class PacketListener extends ChannelInboundHandlerAdapter {
                 metaData.setPlayers(uuids.toArray(new String[uuids.size()]));
                 saveMetaData();
             }
-            //#if MC<10904
+
             //#if MC>=10800
+            if (packet instanceof LoginCompressionS2CPacket) {
+                return; // Replay data is never compressed on the packet level
+            }
+            //#if MC<10904
             //$$ if (packet instanceof S46PacketSetCompressionLevel) {
             //$$     return; // Replay data is never compressed on the packet level
             //$$ }
diff --git a/versions/1.14.4/mapping.txt b/versions/1.14.4/mapping.txt
index e1fdfa62..2197bb9c 100644
--- a/versions/1.14.4/mapping.txt
+++ b/versions/1.14.4/mapping.txt
@@ -484,6 +484,7 @@ net.minecraft.client.world.ClientWorld client mc
 net.minecraft.client.world.ClientWorld disconnect() sendQuittingDisconnectingPacket()
 
 net.minecraft.client.network.packet.LoginQueryRequestS2CPacket net.minecraft.network.login.server.SPacketCustomPayloadLogin
+net.minecraft.client.network.packet.LoginCompressionS2CPacket net.minecraft.network.login.server.SPacketEnableCompression
 net.minecraft.client.network.packet.LoginSuccessS2CPacket net.minecraft.network.login.server.SPacketLoginSuccess
 net.minecraft.client.network.packet net.minecraft.network.play.server
 net.minecraft.client.network.packet.GameJoinS2CPacket net.minecraft.network.play.server.SPacketJoinGame
diff --git a/versions/1.9.4/mapping.txt b/versions/1.9.4/mapping.txt
index ce621b67..884628d7 100644
--- a/versions/1.9.4/mapping.txt
+++ b/versions/1.9.4/mapping.txt
@@ -55,4 +55,5 @@ net.minecraft.network.play.server.SPacketCloseWindow net.minecraft.network.play.
 net.minecraft.network.play.server.SPacketWindowItems net.minecraft.network.play.server.S30PacketWindowItems
 net.minecraft.network.play.server.SPacketStatistics net.minecraft.network.play.server.S37PacketStatistics
 net.minecraft.network.play.server.SPacketPlayerAbilities net.minecraft.network.play.server.S39PacketPlayerAbilities
-net.minecraft.network.login.server.SPacketLoginSuccess net.minecraft.network.login.server.S02PacketLoginSuccess
\ No newline at end of file
+net.minecraft.network.login.server.SPacketEnableCompression net.minecraft.network.login.server.S03PacketEnableCompression
+net.minecraft.network.login.server.SPacketLoginSuccess net.minecraft.network.login.server.S02PacketLoginSuccess