diff -r eb97a082741b -r 4156b1bd4b82 rt/emul/mini/src/main/java/org/apidesign/bck2brwsr/emul/reflect/MethodImpl.java
--- a/rt/emul/mini/src/main/java/org/apidesign/bck2brwsr/emul/reflect/MethodImpl.java	Wed Jun 25 22:50:33 2014 +0200
+++ b/rt/emul/mini/src/main/java/org/apidesign/bck2brwsr/emul/reflect/MethodImpl.java	Wed Jun 25 23:43:51 2014 +0200
@@ -51,9 +51,14 @@
         + "var c = clazz.cnstr;\n"
         + "if (!cnstr) c = c.prototype;\n"
         + "var arr = new Array();\n"
-        + "function check(m) {\n"
+        + "function check(m, verify) {\n"
         + "  if (m.indexOf(prefix) === 0) {\n"
         + "     if (!c[m].cls) return;\n"
+        + "     if (verify) {\n"
+        + "       for (var i = 0; i < arr.length; i += 3) {\n"
+        + "         if (arr[i] === m) return;\n"
+        + "       }\n"
+        + "     }\n"
         + "     arr.push(m);\n"
         + "     arr.push(c[m]);\n"
         + "     arr.push(c[m].cls.$class);\n"
@@ -62,15 +67,15 @@
         + "for (m in c) {\n"
         + "  check(m)\n"
         + "}\n"
-        + "check('wait__V');\n"
-        + "check('wait__VJ');\n"
-        + "check('wait__VJI');\n"
-        + "check('equals__ZLjava_lang_Object_2');\n"
-        + "check('toString__Ljava_lang_String_2');\n"
-        + "check('hashCode__I');\n"
-        + "check('getClass__Ljava_lang_Class_2');\n"
-        + "check('notify__V');\n"
-        + "check('notifyAll__V');\n"
+        + "check('wait__V', true);\n"
+        + "check('wait__VJ', true);\n"
+        + "check('wait__VJI', true);\n"
+        + "check('equals__ZLjava_lang_Object_2', true);\n"
+        + "check('toString__Ljava_lang_String_2', true);\n"
+        + "check('hashCode__I', true);\n"
+        + "check('getClass__Ljava_lang_Class_2', true);\n"
+        + "check('notify__V', true);\n"
+        + "check('notifyAll__V', true);\n"
         + "return arr;\n")
     private static native Object[] findMethodData(
         Class<?> clazz, String prefix, boolean cnstr);