diff --git a/java/java-runtime/src/com/intellij/rt/execution/application/AppMain.java b/java/java-runtime/src/com/intellij/rt/execution/application/AppMain.java
index 5dbd883bc029..af6b2874ac54 100644
--- a/java/java-runtime/src/com/intellij/rt/execution/application/AppMain.java
+++ b/java/java-runtime/src/com/intellij/rt/execution/application/AppMain.java
@@ -135,7 +135,7 @@ public class AppMain {
       System.err.println("main method should be static");
       return;
     }
-    if (!Void.class.isInstance(m.getReturnType())) {
+    if (!void.class.isAssignableFrom(m.getReturnType())) {
       System.err.println("main method must return a value of type void");
       return;
     }