diff --git a/html4j/src/main/java/org/teavm/html4j/HTML4JPlugin.java b/html4j/src/main/java/org/teavm/html4j/HTML4JPlugin.java
index f9fe62c5f..281228749 100644
--- a/html4j/src/main/java/org/teavm/html4j/HTML4JPlugin.java
+++ b/html4j/src/main/java/org/teavm/html4j/HTML4JPlugin.java
@@ -22,7 +22,8 @@ import org.teavm.vm.spi.TeaVMPlugin;
 public class HTML4JPlugin implements TeaVMPlugin {
     @Override
     public void install(TeaVMHost host) {
-        if (host.getExtension(TeaVMJavaScriptHost.class) == null) {
+        TeaVMJavaScriptHost jsHost = host.getExtension(TeaVMJavaScriptHost.class);
+        if (jsHost == null) {
             return;
         }
 
@@ -31,7 +32,8 @@ public class HTML4JPlugin implements TeaVMPlugin {
         host.add(new JavaScriptBodyTransformer());
         host.add(new JCLHacks());
 
-        host.getExtension(TeaVMJavaScriptHost.class).add(new JavaScriptResourceInterceptor());
-        host.getExtension(TeaVMJavaScriptHost.class).add(new JavaScriptObjectEnhancer(bodyDependency));
+        jsHost.add(new JavaScriptResourceInterceptor());
+        jsHost.add(new JavaScriptObjectEnhancer(bodyDependency));
+        jsHost.addVirtualMethods(new JavaScriptBodyVirtualSupplier(bodyDependency));
     }
 }
diff --git a/html4j/src/main/java/org/teavm/html4j/JavaScriptBodyDependency.java b/html4j/src/main/java/org/teavm/html4j/JavaScriptBodyDependency.java
index f974bdffd..b7af14cac 100644
--- a/html4j/src/main/java/org/teavm/html4j/JavaScriptBodyDependency.java
+++ b/html4j/src/main/java/org/teavm/html4j/JavaScriptBodyDependency.java
@@ -40,6 +40,7 @@ import org.teavm.model.ValueType;
 public class JavaScriptBodyDependency extends AbstractDependencyListener {
     private DependencyNode allClassesNode;
     private Map<MethodReference, Set<MethodReference>> reachedMethods = new HashMap<>();
+    Set<MethodReference> virtualMethods = new HashSet<>();
 
     @Override
     public void started(DependencyAgent agent) {
@@ -138,6 +139,11 @@ public class JavaScriptBodyDependency extends AbstractDependencyListener {
         agent.linkMethod(JavaScriptConvGenerator.valueOfShortMethod, location).use();
 
         agent.linkMethod(JavaScriptConvGenerator.valueOfLongMethod, location).use();
+
+        allClassesNode.propagate(agent.getType("java.lang.Integer"));
+        allClassesNode.propagate(agent.getType("java.lang.Float"));
+        allClassesNode.propagate(agent.getType("java.lang.Double"));
+        allClassesNode.propagate(agent.getType("java.lang.String"));
     }
 
     class GeneratorJsCallback extends JsCallback {
@@ -198,10 +204,12 @@ public class JavaScriptBodyDependency extends AbstractDependencyListener {
             if (method == null) {
                 return;
             }
+            virtualMethods.add(method.getReference());
             MethodDependency methodDep = agent.linkMethod(method.getReference(), location);
             methodDep.use();
             for (int i = 0; i < methodDep.getParameterCount(); ++i) {
                 allClassesNode.connect(methodDep.getVariable(i));
+                allClassesNode.connect(methodDep.getVariable(i).getArrayItem());
             }
         }
     }
diff --git a/html4j/src/main/java/org/teavm/html4j/JavaScriptBodyVirtualSupplier.java b/html4j/src/main/java/org/teavm/html4j/JavaScriptBodyVirtualSupplier.java
new file mode 100644
index 000000000..95efbcb77
--- /dev/null
+++ b/html4j/src/main/java/org/teavm/html4j/JavaScriptBodyVirtualSupplier.java
@@ -0,0 +1,33 @@
+/*
+ *  Copyright 2018 Alexey Andreev.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.teavm.html4j;
+
+import org.teavm.backend.javascript.spi.VirtualMethodContributor;
+import org.teavm.backend.javascript.spi.VirtualMethodContributorContext;
+import org.teavm.model.MethodReference;
+
+public class JavaScriptBodyVirtualSupplier implements VirtualMethodContributor {
+    private JavaScriptBodyDependency dependency;
+
+    public JavaScriptBodyVirtualSupplier(JavaScriptBodyDependency dependency) {
+        this.dependency = dependency;
+    }
+
+    @Override
+    public boolean isVirtual(VirtualMethodContributorContext context, MethodReference methodRef) {
+        return dependency.virtualMethods.contains(methodRef);
+    }
+}