diff --git a/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/rtg/RealisticBiomeBaseMixin.java b/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/rtg/RealisticBiomeBaseMixin.java
deleted file mode 100644
index c3e2c9b..0000000
--- a/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/rtg/RealisticBiomeBaseMixin.java
+++ /dev/null
@@ -1,8 +0,0 @@
-package com.falsepattern.endlessids.mixin.mixins.common.rtg;
-
-import org.spongepowered.asm.mixin.Mixin;
-import rtg.world.biome.realistic.RealisticBiomeBase;
-
-@Mixin(RealisticBiomeBase.class)
-public abstract class RealisticBiomeBaseMixin {
-}
diff --git a/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/rwg/RealisticBiomeBaseMixin.java b/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/rwg/RealisticBiomeBaseMixin.java
new file mode 100644
index 0000000..598bbac
--- /dev/null
+++ b/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/rwg/RealisticBiomeBaseMixin.java
@@ -0,0 +1,20 @@
+package com.falsepattern.endlessids.mixin.mixins.common.rwg;
+
+import com.falsepattern.endlessids.constants.ExtendedConstants;
+import com.falsepattern.endlessids.constants.VanillaConstants;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Pseudo;
+import org.spongepowered.asm.mixin.injection.Constant;
+import org.spongepowered.asm.mixin.injection.ModifyConstant;
+
+@Pseudo
+@Mixin(targets = "rwg.biomes.realistic.RealisticBiomeBase",
+       remap = false)
+public abstract class RealisticBiomeBaseMixin {
+    @ModifyConstant(method = "<clinit>",
+                    constant = @Constant(intValue = VanillaConstants.biomeIDCount),
+                    require = 1)
+    private static int extendBiomeIDCount(int constant) {
+        return ExtendedConstants.biomeIDCount;
+    }
+}
diff --git a/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/rwg/VillageMaterialsMixin.java b/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/rwg/VillageMaterialsMixin.java
new file mode 100644
index 0000000..8971a48
--- /dev/null
+++ b/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/rwg/VillageMaterialsMixin.java
@@ -0,0 +1,20 @@
+package com.falsepattern.endlessids.mixin.mixins.common.rwg;
+
+import com.falsepattern.endlessids.constants.ExtendedConstants;
+import com.falsepattern.endlessids.constants.VanillaConstants;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Pseudo;
+import org.spongepowered.asm.mixin.injection.Constant;
+import org.spongepowered.asm.mixin.injection.ModifyConstant;
+
+@Pseudo
+@Mixin(targets = "rwg.data.VillageMaterials",
+       remap = false)
+public abstract class VillageMaterialsMixin {
+    @ModifyConstant(method = "<clinit>",
+                    constant = @Constant(intValue = VanillaConstants.biomeIDCount),
+                    require = 1)
+    private static int extendBiomeIDCount(int constant) {
+        return ExtendedConstants.biomeIDCount;
+    }
+}
diff --git a/src/main/java/com/falsepattern/endlessids/mixin/plugin/Mixin.java b/src/main/java/com/falsepattern/endlessids/mixin/plugin/Mixin.java
index 1576579..349e2da 100644
--- a/src/main/java/com/falsepattern/endlessids/mixin/plugin/Mixin.java
+++ b/src/main/java/com/falsepattern/endlessids/mixin/plugin/Mixin.java
@@ -196,10 +196,11 @@ public enum Mixin implements IMixin {
     //region RTG->common
     RTGChunkProviderRTGMixin(Side.COMMON, require(TargetedMod.RTG), "rtg.ChunkProviderRTGMixin"),
     RTGLandscapeGeneratorMixin(Side.COMMON, require(TargetedMod.RTG), "rtg.LandscapeGeneratorMixin"),
-    RTGRealisticBiomeBaseMixin(Side.COMMON, require(TargetedMod.RTG), "rtg.RealisticBiomeBaseMixin"),
     //endregion RTG->common
     //region RWG->common
     RWGChunkGeneratorRealisticMixin(Side.COMMON, require(TargetedMod.RWG), "rwg.ChunkGeneratorRealisticMixin"),
+    RWGRealisticBiomeBaseMixin(Side.COMMON, require(TargetedMod.RWG), "rwg.RealisticBiomeBaseMixin"),
+    RWGVillageMaterialsMixin(Side.COMMON, require(TargetedMod.RWG), "rwg.VillageMaterialsMixin"),
     //endregion RWG->common
     //region Thaumcraft->common
     ThaumcraftUtilsMixin(Side.COMMON, require(TargetedMod.THAUMCRAFT), "thaumcraft.UtilsMixin"),