diff --git a/mirai-demos/mirai-demo-gentleman/build.gradle b/mirai-demos/mirai-demo-gentleman/build.gradle
index 606d90473..8aa4702ff 100644
--- a/mirai-demos/mirai-demo-gentleman/build.gradle
+++ b/mirai-demos/mirai-demo-gentleman/build.gradle
@@ -15,9 +15,12 @@ dependencies {
     implementation 'org.jsoup:jsoup:1.12.1'
 }
 
-mainClassName = "demo.gentleman.MainKt"
+run{
+    standardInput = System.in
+    mainClassName = "demo.gentleman.MainKt"
+}
 compileKotlin {
     kotlinOptions {
         freeCompilerArgs = ["-XXLanguage:+InlineClasses"]
     }
-}
\ No newline at end of file
+}