diff --git a/idea/testData/codegen/extensionFunctions/generic.jet b/idea/testData/codegen/extensionFunctions/generic.jet
new file mode 100644
index 00000000000..bc3efc03f14
--- /dev/null
+++ b/idea/testData/codegen/extensionFunctions/generic.jet
@@ -0,0 +1,21 @@
+import java.util.*
+
+fun <T> ArrayList<T>.findAll(predicate: {(T) : Boolean}): ArrayList<T> {
+  val result = ArrayList<T>()
+  for(val t in this) {
+    if (predicate(t)) result.add(t)
+  }
+  return result
+}
+
+
+fun box(): String {
+  val list: ArrayList<String> = ArrayList<String>()
+  list.add("Prague")
+  list.add("St.Petersburg")
+  list.add("Moscow")
+  list.add("Munich")
+
+  val m: ArrayList<String> = list.findAll({(name: String) => name.startsWith("M")})
+  return if (m.size() == 2) "OK" else "fail"
+}
diff --git a/idea/tests/org/jetbrains/jet/codegen/ExtensionFunctionsTest.java b/idea/tests/org/jetbrains/jet/codegen/ExtensionFunctionsTest.java
index 3305c6f551e..46a00736ddc 100644
--- a/idea/tests/org/jetbrains/jet/codegen/ExtensionFunctionsTest.java
+++ b/idea/tests/org/jetbrains/jet/codegen/ExtensionFunctionsTest.java
@@ -23,4 +23,8 @@ public class ExtensionFunctionsTest extends CodegenTestCase {
         Method foo = generateFunction("foo");
         assertThrows(foo, Exception.class, null, new StringBuilder());
     }
+
+    public void _testGeneric() throws Exception {
+        blackBoxFile("extensionFunctions/generic.jet");
+    }
 }