diff --git a/java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advHighlighting7/ambiguousIDEA21660/pck/AmbiguousMethodCall.java b/java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advHighlighting7/ambiguousIDEA21660/pck/AmbiguousMethodCall.java
new file mode 100644
index 000000000000..fd7315d2f4bb
--- /dev/null
+++ b/java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advHighlighting7/ambiguousIDEA21660/pck/AmbiguousMethodCall.java
@@ -0,0 +1,15 @@
+package pck;
+
+class TestCase {
+  void assertEquals(Object o1, Object o2) {}
+
+  void assertEquals(int i1, int i2) {}
+}
+
+class Test extends TestCase {
+  void test() {
+    int expected = 1;
+    Integer actual = 2;
+    assertEquals<error descr="Ambiguous method call: both 'TestCase.assertEquals(Object, Object)' and 'TestCase.assertEquals(int, int)' match">(expected, actual)</error>;
+  }
+}
\ No newline at end of file
diff --git a/java/java-tests/testSrc/com/intellij/codeInsight/daemon/AdvHighlightingJdk7Test.java b/java/java-tests/testSrc/com/intellij/codeInsight/daemon/AdvHighlightingJdk7Test.java
index e3556fb167b4..df35daebe098 100644
--- a/java/java-tests/testSrc/com/intellij/codeInsight/daemon/AdvHighlightingJdk7Test.java
+++ b/java/java-tests/testSrc/com/intellij/codeInsight/daemon/AdvHighlightingJdk7Test.java
@@ -177,4 +177,8 @@ public class AdvHighlightingJdk7Test extends DaemonAnalyzerTestCase {
     doTestAmbiguous();
   }
   
+  public void testAmbiguousIDEA21660() throws Exception {
+     doTestAmbiguous();
+   }
+  
 }