diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/plugin/PluginLoader.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/plugin/PluginLoader.kt
index 60df456ca..2b4dc1e56 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/plugin/PluginLoader.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/plugin/PluginLoader.kt
@@ -50,6 +50,8 @@ interface PluginLoader<P : Plugin, D : PluginDescription> {
     fun disable(plugin: P)
 }
 
+fun <D : PluginDescription, P : Plugin> PluginLoader<P, D>.getDescription(plugin: P): D = plugin.description
+
 open class PluginLoadException : RuntimeException {
     constructor() : super()
     constructor(message: String?) : super(message)
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/plugin/PluginManager.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/plugin/PluginManager.kt
index 9140403c0..76647cef3 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/plugin/PluginManager.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/plugin/PluginManager.kt
@@ -13,12 +13,16 @@ package net.mamoe.mirai.console.plugin
 
 import kotlinx.atomicfu.locks.withLock
 import net.mamoe.mirai.console.MiraiConsole
+import net.mamoe.mirai.console.setting.internal.cast
 import net.mamoe.mirai.utils.info
 import java.io.File
 import java.util.concurrent.locks.ReentrantLock
 
 val Plugin.description: PluginDescription
-    get() = PluginManager.resolvedPlugins.firstOrNull { it == this }?.description ?: error("Plugin is unloaded")
+    get() = PluginManager.resolvedPlugins.firstOrNull { it == this }?.loader?.cast<PluginLoader<Plugin, PluginDescription>>()
+        ?.getDescription(
+            this
+        ) ?: error("Plugin is unloaded")
 
 inline fun PluginLoader<*, *>.register() = PluginManager.registerPluginLoader(this)
 inline fun PluginLoader<*, *>.unregister() = PluginManager.unregisterPluginLoader(this)
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/plugin/jvm/JarPluginLoader.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/plugin/jvm/JarPluginLoader.kt
index c70bc47da..37a66942b 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/plugin/jvm/JarPluginLoader.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/plugin/jvm/JarPluginLoader.kt
@@ -21,7 +21,7 @@ import net.mamoe.mirai.console.utils.ConsoleExperimentalAPI
 import net.mamoe.mirai.utils.MiraiLogger
 import net.mamoe.yamlkt.Yaml
 import java.io.File
-import java.net.URL
+import java.net.URI
 import kotlin.coroutines.CoroutineContext
 import kotlin.reflect.full.createInstance
 
@@ -54,17 +54,18 @@ object JarPluginLoader : AbstractFilePluginLoader<JvmPlugin, JvmPluginDescriptio
         get() = this.description
 
     override fun Sequence<File>.mapToDescription(): List<JvmPluginDescription> {
-        return this.associateWith { URL("jar:${it.absolutePath}!/plugin.yml") }.mapNotNull { (file, url) ->
-            kotlin.runCatching {
-                url.readText()
-            }.fold(
-                onSuccess = { yaml ->
-                    Yaml.nonStrict.parse(JvmPluginDescription.serializer(), yaml)
-                },
-                onFailure = {
-                    logger.error("Cannot load plugin file ${file.name}", it)
-                    null
-                }
+        return this.associateWith { URI("jar:file:${it.absolutePath.replace('\\', '/')}!/plugin.yml").toURL() }
+            .mapNotNull { (file, url) ->
+                kotlin.runCatching {
+                    url.readText()
+                }.fold(
+                    onSuccess = { yaml ->
+                        Yaml.nonStrict.parse(JvmPluginDescription.serializer(), yaml)
+                    },
+                    onFailure = {
+                        logger.error("Cannot load plugin file ${file.name}", it)
+                        null
+                    }
             )?.also { it._file = file }
         }
     }
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/setting/internal/Setting.value composite impl.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/setting/internal/Setting.value composite impl.kt
index c70db9e71..19883207e 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/setting/internal/Setting.value composite impl.kt	
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/setting/internal/Setting.value composite impl.kt	
@@ -141,7 +141,7 @@ internal fun KClass<*>.isPrimitiveOrBuiltInSerializableValue(): Boolean {
 
 @PublishedApi
 @Suppress("UNCHECKED_CAST")
-internal inline fun <R, T> T.cast(): R = this as R
+internal inline fun <R> Any.cast(): R = this as R
 
 /**
  * Copied from kotlinx.serialization, modifications are marked with "/* mamoe modify */"