diff --git a/Spigot-Server-Patches/Configurable-lava-flow-speed.patch b/Spigot-Server-Patches/Configurable-lava-flow-speed.patch
index e524ed3bf46..7839247d7ed 100644
--- a/Spigot-Server-Patches/Configurable-lava-flow-speed.patch
+++ b/Spigot-Server-Patches/Configurable-lava-flow-speed.patch
@@ -29,9 +29,21 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
       */
      public int getFlowSpeed(World world, BlockPosition blockposition) {
 +        if (this.material == Material.LAVA) {
-+            return world.worldProvider.m() ? world.paperConfig.lavaFlowSpeedNether : world.paperConfig.lavaFlowSpeedNormal;
++            return world.worldProvider.isSkyMissing() ? world.paperConfig.lavaFlowSpeedNether : world.paperConfig.lavaFlowSpeedNormal;
 +        }
          if (this.material == Material.WATER && (
                  world.getType(blockposition.north(1)).getBlock().material == Material.LAVA ||
                          world.getType(blockposition.south(1)).getBlock().material == Material.LAVA ||
+diff --git a/src/main/java/net/minecraft/server/WorldProvider.java b/src/main/java/net/minecraft/server/WorldProvider.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/net/minecraft/server/WorldProvider.java
++++ b/src/main/java/net/minecraft/server/WorldProvider.java
+@@ -0,0 +0,0 @@ public abstract class WorldProvider {
+         return this.f;
+     }
+ 
++    public final boolean isSkyMissing() { return this.n(); } // Paper - OBFHELPER
+     public boolean n() {
+         return this.e;
+     }
 --
\ No newline at end of file