diff --git a/Plan/fabric/build.gradle b/Plan/fabric/build.gradle
index 2f3e7cb2e..edada315c 100644
--- a/Plan/fabric/build.gradle
+++ b/Plan/fabric/build.gradle
@@ -30,6 +30,11 @@ dependencies {
     testImplementation project(path: ":common", configuration: 'testArtifacts')
 }
 
+loom {
+    // Defining separate refmap file prevents conflicts with plugin mixins
+    mixin.defaultRefmapName.set("plan-fabric-refmap.json")
+}
+
 tasks.withType(JavaCompile).configureEach {
     options.release.set(17)
 }
diff --git a/Plan/fabric/src/main/resources/plan.mixins.json b/Plan/fabric/src/main/resources/plan.mixins.json
index 943fbcb48..30e2a029e 100644
--- a/Plan/fabric/src/main/resources/plan.mixins.json
+++ b/Plan/fabric/src/main/resources/plan.mixins.json
@@ -3,6 +3,7 @@
   "minVersion": "0.8",
   "package": "net.playeranalytics.plan.gathering.listeners.events.mixin",
   "compatibilityLevel": "JAVA_17",
+  "refmap": "plan-fabric-refmap.json",
   "mixins": [
     "ClientToServerHandshakePacketMixin",
     "KickCommandMixin",