diff --git a/src/main/kotlin/mods/betterfoliage/client/config/Config.kt b/src/main/kotlin/mods/betterfoliage/client/config/Config.kt
index 4abf14f..dce8746 100644
--- a/src/main/kotlin/mods/betterfoliage/client/config/Config.kt
+++ b/src/main/kotlin/mods/betterfoliage/client/config/Config.kt
@@ -36,6 +36,7 @@ object Config : DelegatingConfig(BetterFoliageMod.MOD_ID, BetterFoliageMod.DOMAI
         val leavesModels = ModelTextureListConfigOption(BetterFoliageMod.DOMAIN, "LeavesModelsDefault.cfg", 1)
         val grassClasses = ConfigurableBlockMatcher(BetterFoliageMod.DOMAIN, "GrassBlocksDefault.cfg")
         val grassModels = ModelTextureListConfigOption(BetterFoliageMod.DOMAIN, "GrassModelsDefault.cfg", 1)
+        val mycelium = ConfigurableBlockMatcher(BetterFoliageMod.DOMAIN, "MyceliumBlocksDefault.cfg")
         val dirt = ConfigurableBlockMatcher(BetterFoliageMod.DOMAIN, "DirtDefault.cfg")
         val crops = ConfigurableBlockMatcher(BetterFoliageMod.DOMAIN, "CropDefault.cfg")
         val logClasses = ConfigurableBlockMatcher(BetterFoliageMod.DOMAIN, "LogBlocksDefault.cfg")
@@ -43,6 +44,7 @@ object Config : DelegatingConfig(BetterFoliageMod.MOD_ID, BetterFoliageMod.DOMAI
         val sand = ConfigurableBlockMatcher(BetterFoliageMod.DOMAIN, "SandDefault.cfg")
         val lilypad = ConfigurableBlockMatcher(BetterFoliageMod.DOMAIN, "LilypadDefault.cfg")
         val cactus = ConfigurableBlockMatcher(BetterFoliageMod.DOMAIN, "CactusDefault.cfg")
+        val netherrack = ConfigurableBlockMatcher(BetterFoliageMod.DOMAIN, "NetherrackBlocksDefault.cfg")
 
         val leavesWhitelist = OBSOLETE
         val leavesBlacklist = OBSOLETE
diff --git a/src/main/kotlin/mods/betterfoliage/client/render/RenderMycelium.kt b/src/main/kotlin/mods/betterfoliage/client/render/RenderMycelium.kt
index 3608eb0..40921ec 100644
--- a/src/main/kotlin/mods/betterfoliage/client/render/RenderMycelium.kt
+++ b/src/main/kotlin/mods/betterfoliage/client/render/RenderMycelium.kt
@@ -11,7 +11,6 @@ import mods.octarinecore.common.Double3
 import mods.octarinecore.common.Rotation
 import net.minecraft.client.renderer.BlockRendererDispatcher
 import net.minecraft.client.renderer.VertexBuffer
-import net.minecraft.init.Blocks
 import net.minecraft.util.BlockRenderLayer
 import net.minecraftforge.fml.relauncher.Side
 import net.minecraftforge.fml.relauncher.SideOnly
@@ -29,8 +28,8 @@ class RenderMycelium : AbstractBlockRenderingHandler(BetterFoliageMod.MOD_ID) {
 
     override fun isEligible(ctx: BlockContext): Boolean {
         if (!Config.enabled || !Config.shortGrass.myceliumEnabled) return false
-        return ctx.block == Blocks.MYCELIUM &&
-        ctx.cameraDistance < Config.shortGrass.distance
+        return Config.blocks.mycelium.matchesClass(ctx.block) &&
+            ctx.cameraDistance < Config.shortGrass.distance
     }
 
     override fun render(ctx: BlockContext, dispatcher: BlockRendererDispatcher, renderer: VertexBuffer, layer: BlockRenderLayer): Boolean {
diff --git a/src/main/kotlin/mods/betterfoliage/client/render/RenderNetherrack.kt b/src/main/kotlin/mods/betterfoliage/client/render/RenderNetherrack.kt
index 880b7d8..0665e3f 100644
--- a/src/main/kotlin/mods/betterfoliage/client/render/RenderNetherrack.kt
+++ b/src/main/kotlin/mods/betterfoliage/client/render/RenderNetherrack.kt
@@ -9,7 +9,6 @@ import mods.octarinecore.common.Rotation
 import mods.octarinecore.random
 import net.minecraft.client.renderer.BlockRendererDispatcher
 import net.minecraft.client.renderer.VertexBuffer
-import net.minecraft.init.Blocks
 import net.minecraft.util.BlockRenderLayer
 import net.minecraft.util.EnumFacing.*
 import net.minecraftforge.fml.relauncher.Side
@@ -35,8 +34,8 @@ class RenderNetherrack : AbstractBlockRenderingHandler(BetterFoliageMod.MOD_ID)
 
     override fun isEligible(ctx: BlockContext): Boolean {
         if (!Config.enabled || !Config.netherrack.enabled) return false
-        return ctx.block == Blocks.NETHERRACK &&
-        ctx.cameraDistance < Config.netherrack.distance
+        return Config.blocks.netherrack.matchesClass(ctx.block) &&
+            ctx.cameraDistance < Config.netherrack.distance
     }
 
     override fun render(ctx: BlockContext, dispatcher: BlockRendererDispatcher, renderer: VertexBuffer, layer: BlockRenderLayer): Boolean {
diff --git a/src/main/resources/assets/betterfoliage/MyceliumBlocksDefault.cfg b/src/main/resources/assets/betterfoliage/MyceliumBlocksDefault.cfg
new file mode 100644
index 0000000..970dc3f
--- /dev/null
+++ b/src/main/resources/assets/betterfoliage/MyceliumBlocksDefault.cfg
@@ -0,0 +1,5 @@
+// Vanilla
+net.minecraft.block.BlockMycelium
+
+// NetherEx
+nex.block.BlockMycelium
diff --git a/src/main/resources/assets/betterfoliage/NetherrackBlocksDefault.cfg b/src/main/resources/assets/betterfoliage/NetherrackBlocksDefault.cfg
new file mode 100644
index 0000000..ca37623
--- /dev/null
+++ b/src/main/resources/assets/betterfoliage/NetherrackBlocksDefault.cfg
@@ -0,0 +1,5 @@
+// Vanilla
+net.minecraft.block.BlockNetherrack
+
+// NetherEx
+nex.block.BlockNetherrack