diff --git a/common/src/main/java/org/embeddedt/modernfix/common/mixin/perf/dedicated_reload_executor/CreateWorldScreenMixin.java b/common/src/main/java/org/embeddedt/modernfix/common/mixin/perf/dedicated_reload_executor/CreateWorldScreenMixin.java
index d22efa49..bfd9f6d4 100644
--- a/common/src/main/java/org/embeddedt/modernfix/common/mixin/perf/dedicated_reload_executor/CreateWorldScreenMixin.java
+++ b/common/src/main/java/org/embeddedt/modernfix/common/mixin/perf/dedicated_reload_executor/CreateWorldScreenMixin.java
@@ -2,6 +2,7 @@ package org.embeddedt.modernfix.common.mixin.perf.dedicated_reload_executor;
 
 import net.minecraft.client.gui.screens.worldselection.CreateWorldScreen;
 import org.embeddedt.modernfix.ModernFix;
+import org.embeddedt.modernfix.annotation.ClientOnlyMixin;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.ModifyArg;
@@ -9,6 +10,7 @@ import org.spongepowered.asm.mixin.injection.ModifyArg;
 import java.util.concurrent.Executor;
 
 @Mixin(CreateWorldScreen.class)
+@ClientOnlyMixin
 public class CreateWorldScreenMixin {
     @ModifyArg(method = "tryApplyNewDataPacks", at = @At(value = "INVOKE", target = "Lnet/minecraft/server/WorldLoader;load(Lnet/minecraft/server/WorldLoader$InitConfig;Lnet/minecraft/server/WorldLoader$WorldDataSupplier;Lnet/minecraft/server/WorldLoader$ResultFactory;Ljava/util/concurrent/Executor;Ljava/util/concurrent/Executor;)Ljava/util/concurrent/CompletableFuture;"), index = 3)
     private Executor getReloadExecutorService(Executor e) {
diff --git a/common/src/main/java/org/embeddedt/modernfix/common/mixin/perf/dedicated_reload_executor/WorldOpenFlowsMixin.java b/common/src/main/java/org/embeddedt/modernfix/common/mixin/perf/dedicated_reload_executor/WorldOpenFlowsMixin.java
index a1139d33..169370d6 100644
--- a/common/src/main/java/org/embeddedt/modernfix/common/mixin/perf/dedicated_reload_executor/WorldOpenFlowsMixin.java
+++ b/common/src/main/java/org/embeddedt/modernfix/common/mixin/perf/dedicated_reload_executor/WorldOpenFlowsMixin.java
@@ -2,6 +2,7 @@ package org.embeddedt.modernfix.common.mixin.perf.dedicated_reload_executor;
 
 import net.minecraft.client.gui.screens.worldselection.WorldOpenFlows;
 import org.embeddedt.modernfix.ModernFix;
+import org.embeddedt.modernfix.annotation.ClientOnlyMixin;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.ModifyArg;
@@ -9,6 +10,7 @@ import org.spongepowered.asm.mixin.injection.ModifyArg;
 import java.util.concurrent.Executor;
 
 @Mixin(WorldOpenFlows.class)
+@ClientOnlyMixin
 public class WorldOpenFlowsMixin {
     @ModifyArg(method = "loadWorldStem(Lnet/minecraft/server/WorldLoader$PackConfig;Lnet/minecraft/server/WorldLoader$WorldDataSupplier;)Lnet/minecraft/server/WorldStem;", at = @At(value = "INVOKE", target = "Lnet/minecraft/server/WorldStem;load(Lnet/minecraft/server/WorldLoader$InitConfig;Lnet/minecraft/server/WorldLoader$WorldDataSupplier;Ljava/util/concurrent/Executor;Ljava/util/concurrent/Executor;)Ljava/util/concurrent/CompletableFuture;"), index = 2)
     private Executor getResourceReloadExecutor(Executor service) {
diff --git a/forge/src/main/java/org/embeddedt/modernfix/forge/mixin/perf/skip_first_datapack_reload/CreateWorldScreenMixin.java b/forge/src/main/java/org/embeddedt/modernfix/forge/mixin/perf/skip_first_datapack_reload/CreateWorldScreenMixin.java
index 5f053773..0baab884 100644
--- a/forge/src/main/java/org/embeddedt/modernfix/forge/mixin/perf/skip_first_datapack_reload/CreateWorldScreenMixin.java
+++ b/forge/src/main/java/org/embeddedt/modernfix/forge/mixin/perf/skip_first_datapack_reload/CreateWorldScreenMixin.java
@@ -19,6 +19,7 @@ import net.minecraft.world.level.DataPackConfig;
 import net.minecraft.world.level.levelgen.WorldGenSettings;
 import net.minecraft.world.level.levelgen.presets.WorldPresets;
 import org.embeddedt.modernfix.ModernFix;
+import org.embeddedt.modernfix.annotation.ClientOnlyMixin;
 import org.spongepowered.asm.mixin.Final;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
@@ -30,6 +31,7 @@ import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.Executor;
 
 @Mixin(CreateWorldScreen.class)
+@ClientOnlyMixin
 public abstract class CreateWorldScreenMixin extends Screen {
     @Shadow protected static WorldLoader.InitConfig createDefaultLoadConfig(PackRepository arg, DataPackConfig arg2) {
         throw new AssertionError();