diff --git a/loader/src/main/java/net/neoforged/fml/common/asm/RuntimeDistCleaner.java b/loader/src/main/java/net/neoforged/fml/common/asm/RuntimeDistCleaner.java
index 7635eed8e..deea9fe86 100644
--- a/loader/src/main/java/net/neoforged/fml/common/asm/RuntimeDistCleaner.java
+++ b/loader/src/main/java/net/neoforged/fml/common/asm/RuntimeDistCleaner.java
@@ -7,18 +7,14 @@
 
 import com.google.common.collect.Streams;
 import com.mojang.logging.LogUtils;
-import cpw.mods.jarhandling.SecureJar;
 import cpw.mods.modlauncher.serviceapi.ILaunchPluginService;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.EnumSet;
-import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
-import java.util.Map;
 import java.util.Objects;
 import java.util.concurrent.atomic.AtomicBoolean;
-import java.util.jar.Attributes;
 import java.util.stream.Collectors;
 import net.neoforged.api.distmarker.Dist;
 import net.neoforged.api.distmarker.OnlyIn;
@@ -42,19 +38,10 @@ public class RuntimeDistCleaner implements ILaunchPluginService {
     private static final Marker DISTXFORM = MarkerFactory.getMarker("DISTXFORM");
     private static final String ONLYIN = Type.getDescriptor(OnlyIn.class);
     private static final String ONLYINS = Type.getDescriptor(OnlyIns.class);
-    private static final Attributes.Name NAME_DISTS = new Attributes.Name("NeoForm-Minecraft-Dists");
-    private static final Attributes.Name NAME_DIST = new Attributes.Name("NeoForm-Minecraft-Dist");
 
     @Nullable
     private String dist;
 
-    /**
-     * Records which files were masked in a joined distribution because the user requested to run
-     * in client or server explicitly. The key is the class name while the value is the dist it originally
-     * comes from.
-     */
-    private final Map<String, String> maskedClasses = new HashMap<>();
-
     @Override
     public String name() {
         return "runtimedistcleaner";
@@ -67,12 +54,6 @@ public int processClassWithFlags(final Phase phase, final ClassNode classNode, f
             return ComputeFlags.NO_REWRITE;
         }
 
-        // See if the class we're trying to load was masked
-        var sourceDist = maskedClasses.get(classNode.name);
-        if (sourceDist != null && !dist.equals(sourceDist)) {
-            throw new RuntimeException("Attempted to load class " + classNode.name + " for invalid dist " + dist);
-        }
-
         AtomicBoolean changes = new AtomicBoolean();
         if (remove(classNode.visibleAnnotations, dist)) {
             LOGGER.error(DISTXFORM, "Attempted to load class {} for invalid dist {}", classNode.name, dist);
@@ -163,32 +144,6 @@ private boolean remove(final List<AnnotationNode> anns, final String side) {
         return unpack(anns).stream().filter(ann -> Objects.equals(ann.desc, ONLYIN)).filter(ann -> !ann.values.contains("_interface")).anyMatch(ann -> !Objects.equals(((String[]) ann.values.get(ann.values.indexOf("value") + 1))[1], side));
     }
 
-    @Override
-    public void addResources(List<SecureJar> resources) {
-        for (var resource : resources) {
-            var manifest = resource.moduleDataProvider().getManifest();
-            // Only process manifests of jars that indicate they have multiple source distributions
-            if (manifest.getMainAttributes().getValue(NAME_DISTS) != null) {
-                for (var entry : manifest.getEntries().entrySet()) {
-                    String sourceDist = switch (entry.getValue().getValue(NAME_DIST)) {
-                        case "client" -> Dist.CLIENT.name();
-                        case "server" -> Dist.DEDICATED_SERVER.name();
-                        case null, default -> null;
-                    };
-                    if (sourceDist == null) {
-                        continue;
-                    }
-
-                    var path = entry.getKey();
-                    if (path.endsWith(".class")) {
-                        var key = path.substring(0, path.length() - ".class".length());
-                        maskedClasses.put(key, sourceDist);
-                    }
-                }
-            }
-        }
-    }
-
     public void setDistribution(@Nullable Dist dist) {
         if (dist != null) {
             this.dist = dist.name();
diff --git a/loader/src/main/java/net/neoforged/fml/loading/moddiscovery/locators/NeoForgeDevProvider.java b/loader/src/main/java/net/neoforged/fml/loading/moddiscovery/locators/NeoForgeDevProvider.java
index c13e08e27..1a568d292 100644
--- a/loader/src/main/java/net/neoforged/fml/loading/moddiscovery/locators/NeoForgeDevProvider.java
+++ b/loader/src/main/java/net/neoforged/fml/loading/moddiscovery/locators/NeoForgeDevProvider.java
@@ -34,8 +34,8 @@
  */
 public class NeoForgeDevProvider implements IModFileCandidateLocator {
     private static final Logger LOG = LoggerFactory.getLogger(NeoForgeDevProvider.class);
-    private static final Attributes.Name NAME_DISTS = new Attributes.Name("NeoForm-Minecraft-Dists");
-    private static final Attributes.Name NAME_DIST = new Attributes.Name("NeoForm-Minecraft-Dist");
+    private static final Attributes.Name NAME_DISTS = new Attributes.Name("Minecraft-Dists");
+    private static final Attributes.Name NAME_DIST = new Attributes.Name("Minecraft-Dist");
 
     private final List<Path> paths;