diff --git a/buildSrc/src/main/kotlin/com/dfsek/terra/CompilationConfig.kt b/buildSrc/src/main/kotlin/com/dfsek/terra/CompilationConfig.kt
index a6619cc1f..a2d50f780 100644
--- a/buildSrc/src/main/kotlin/com/dfsek/terra/CompilationConfig.kt
+++ b/buildSrc/src/main/kotlin/com/dfsek/terra/CompilationConfig.kt
@@ -19,7 +19,7 @@ fun Project.configureCompilation() {
     tasks.withType<JavaCompile> {
         options.encoding = "UTF-8"
         doFirst {
-            options.compilerArgs = mutableListOf("-Xlint:all")
+            options.compilerArgs.add("-Xlint:all")
         }
     }
 
diff --git a/platforms/fabric/build.gradle.kts b/platforms/fabric/build.gradle.kts
index cece1888a..86ba8b1e1 100644
--- a/platforms/fabric/build.gradle.kts
+++ b/platforms/fabric/build.gradle.kts
@@ -33,6 +33,7 @@ dependencies {
 
 configure<LoomGradleExtension> {
     accessWidener("src/main/resources/terra.accesswidener")
+    refmapName = "terra.refmap.json"
 }
 
 val remapped = tasks.register<RemapJarTask>("remapShadedJar") {
diff --git a/platforms/fabric/src/main/java/com/dfsek/terra/fabric/mixin/MixinGeneratorOptions.java b/platforms/fabric/src/main/java/com/dfsek/terra/fabric/mixin/MixinGeneratorOptions.java
index aa588249a..badfc176f 100644
--- a/platforms/fabric/src/main/java/com/dfsek/terra/fabric/mixin/MixinGeneratorOptions.java
+++ b/platforms/fabric/src/main/java/com/dfsek/terra/fabric/mixin/MixinGeneratorOptions.java
@@ -13,16 +13,17 @@ import net.minecraft.world.dimension.DimensionOptions;
 import net.minecraft.world.dimension.DimensionType;
 import net.minecraft.world.gen.GeneratorOptions;
 import net.minecraft.world.gen.chunk.ChunkGeneratorSettings;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
 import java.util.Properties;
 import java.util.Random;
 
-// Mixins commented out until loom fixes multi-project builds.
-
-//@Mixin(GeneratorOptions.class)
+@Mixin(GeneratorOptions.class)
 public class MixinGeneratorOptions {
-    //@Inject(method = "fromProperties(Lnet/minecraft/util/registry/DynamicRegistryManager;Ljava/util/Properties;)Lnet/minecraft/world/gen/GeneratorOptions;", at = @At("HEAD"), cancellable = true)
+    @Inject(method = "fromProperties(Lnet/minecraft/util/registry/DynamicRegistryManager;Ljava/util/Properties;)Lnet/minecraft/world/gen/GeneratorOptions;", at = @At("HEAD"), cancellable = true)
     private static void fromProperties(DynamicRegistryManager dynamicRegistryManager, Properties properties, CallbackInfoReturnable<GeneratorOptions> cir) {
         if(properties.get("level-type") == null) {
             return;
diff --git a/platforms/fabric/src/main/resources/terra-refmap.json b/platforms/fabric/src/main/resources/terra-refmap.json
deleted file mode 100644
index 8dbf41449..000000000
--- a/platforms/fabric/src/main/resources/terra-refmap.json
+++ /dev/null
@@ -1,16 +0,0 @@
-{
-  "mappings": {
-    "com/dfsek/terra/fabric/mixin/GeneratorTypeAccessor": {
-      "VALUES": "field_25052:Ljava/util/List;",
-      "translationKey": "field_25060:Lnet/minecraft/class_2561;"
-    }
-  },
-  "data": {
-    "named:intermediary": {
-      "com/dfsek/terra/fabric/mixin/GeneratorTypeAccessor": {
-        "VALUES": "field_25052:Ljava/util/List;",
-        "translationKey": "field_25060:Lnet/minecraft/class_2561;"
-      }
-    }
-  }
-}
\ No newline at end of file
diff --git a/platforms/fabric/src/main/resources/terra.mixins.json b/platforms/fabric/src/main/resources/terra.mixins.json
index 8537843c7..ffbbb8bf4 100644
--- a/platforms/fabric/src/main/resources/terra.mixins.json
+++ b/platforms/fabric/src/main/resources/terra.mixins.json
@@ -4,6 +4,7 @@
   "package": "com.dfsek.terra.fabric.mixin",
   "compatibilityLevel": "JAVA_8",
   "mixins": [
+    "MixinGeneratorOptions"
   ],
   "client": [
     "GeneratorTypeAccessor"