diff --git a/build.gradle.kts b/build.gradle.kts
index cc116800..82c2905f 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -97,10 +97,14 @@ tasks.test {
     useJUnitPlatform()
 }
 
-tasks.withType<JavaCompile>() {
+tasks.withType<JavaCompile> {
     options.encoding = "UTF-8"
 }
 
-tasks.withType<Javadoc>() {
+tasks.withType<Javadoc> {
     options.encoding = "UTF-8"
 }
+
+tasks.getByName<Jar>("jar") {
+    enabled = false
+}
\ No newline at end of file
diff --git a/src/main/java/icu/samnyan/aqua/sega/maimai2/handler/impl/UploadUserPlaylogHandler.kt b/src/main/java/icu/samnyan/aqua/sega/maimai2/handler/impl/UploadUserPlaylogHandler.kt
index f01af649..4d8f9ccd 100644
--- a/src/main/java/icu/samnyan/aqua/sega/maimai2/handler/impl/UploadUserPlaylogHandler.kt
+++ b/src/main/java/icu/samnyan/aqua/sega/maimai2/handler/impl/UploadUserPlaylogHandler.kt
@@ -49,7 +49,7 @@ class UploadUserPlaylogHandler(
     fun cleanBacklog() {
         // Clean all backlog entries that are older than 5 minutes
         val now = millis()
-        playBacklog.filter { (k, v) -> v.isEmpty() || v[0].time - now > 300_000 }.toList()
+        playBacklog.filter { (_, v) -> v.isEmpty() || v[0].time - now > 300_000 }.toList()
             .forEach { (k, _) -> playBacklog.remove(k) }
     }
 }