diff --git a/Spigot-Server-Patches/Check-async-remove-unused-vars-GH-159.patch b/Spigot-Server-Patches/Check-async-remove-unused-vars-GH-159.patch
new file mode 100644
index 0000000000..539de02c8b
--- /dev/null
+++ b/Spigot-Server-Patches/Check-async-remove-unused-vars-GH-159.patch
@@ -0,0 +1,30 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Zach Brown <1254957+zachbr@users.noreply.github.com>
+Date: Sun, 27 Mar 2016 20:24:05 -0500
+Subject: [PATCH] Check async, remove unused vars, GH-159
+
+
+diff --git a/src/main/java/net/minecraft/server/SpawnerCreature.java b/src/main/java/net/minecraft/server/SpawnerCreature.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/net/minecraft/server/SpawnerCreature.java
++++ b/src/main/java/net/minecraft/server/SpawnerCreature.java
+@@ -0,0 +0,0 @@ public final class SpawnerCreature {
+     // Spigot end
+ 
+     public int a(WorldServer worldserver, boolean flag, boolean flag1, boolean flag2) {
++        org.spigotmc.AsyncCatcher.catchOp("check for eligible spawn chunks"); // Paper - At least until we figure out what is calling this async
+         if (!flag && !flag1) {
+             return 0;
+         } else {
+@@ -0,0 +0,0 @@ public final class SpawnerCreature {
+                 // CraftBukkit end
+ 
+                 if ((!enumcreaturetype.d() || flag1) && (enumcreaturetype.d() || flag) && (!enumcreaturetype.e() || flag2)) {
++                    /* Paper start - As far as I can tell neither of these are even used
+                     k = worldserver.a(enumcreaturetype.a());
+                     int l1 = limit * i / a; // CraftBukkit - use per-world limits
++                    */ // Paper end
+ 
+                     if ((mobcnt = getEntityCount(worldserver, enumcreaturetype.a())) <= limit * i / 256) {
+                         BlockPosition.MutableBlockPosition blockposition_mutableblockposition = new BlockPosition.MutableBlockPosition();
+--
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