diff --git a/core/src/main/java/org/teavm/runtime/EventQueue.java b/core/src/main/java/org/teavm/runtime/EventQueue.java
index e60d6be7d..3e656e559 100644
--- a/core/src/main/java/org/teavm/runtime/EventQueue.java
+++ b/core/src/main/java/org/teavm/runtime/EventQueue.java
@@ -18,7 +18,9 @@ package org.teavm.runtime;
 import java.util.Arrays;
 import org.teavm.backend.c.intrinsic.RuntimeInclude;
 import org.teavm.interop.Import;
+import org.teavm.interop.Platforms;
 import org.teavm.interop.StaticInit;
+import org.teavm.interop.UnsupportedOn;
 
 @StaticInit
 public final class EventQueue {
@@ -127,10 +129,12 @@ public final class EventQueue {
 
     @Import(name = "teavm_waitFor")
     @RuntimeInclude("fiber.h")
+    @UnsupportedOn(Platforms.WEBASSEMBLY)
     private static native void waitFor(long time);
 
     @Import(name = "teavm_interrupt")
     @RuntimeInclude("fiber.h")
+    @UnsupportedOn(Platforms.WEBASSEMBLY)
     private static native void interrupt();
 
     private static void ensureCapacity(int capacity) {