diff --git a/libraries/stdlib/test/collections/CollectionBehaviors.kt b/libraries/stdlib/test/collections/CollectionBehaviors.kt
index 432c03eaf6e..91e6a415199 100644
--- a/libraries/stdlib/test/collections/CollectionBehaviors.kt
+++ b/libraries/stdlib/test/collections/CollectionBehaviors.kt
@@ -107,8 +107,8 @@ public fun <T> CompareContext<Collection<T>>.collectionBehavior(objectName: Stri
     propertyEquals (prefix + "size") { size() }
     propertyEquals (prefix + "isEmpty") { isEmpty() }
 
-    (object {}).let { propertyEquals { contains(it)}  }
-    propertyEquals { contains(firstOrNull()) }
+    (object {}).let { propertyEquals { containsRaw(it)}  }
+    propertyEquals { contains<T?>(firstOrNull()) }
     propertyEquals { containsAll(this) }
 }
 
diff --git a/libraries/stdlib/test/js/SetJsTest.kt b/libraries/stdlib/test/js/SetJsTest.kt
index aa516f5646c..e602be5021f 100644
--- a/libraries/stdlib/test/js/SetJsTest.kt
+++ b/libraries/stdlib/test/js/SetJsTest.kt
@@ -103,11 +103,11 @@ abstract class SetJsTest {
         assertTrue(data.contains("foo"))
         assertTrue(data.contains("bar"))
         assertFalse(data.contains("baz"))
-        assertFalse(data.contains(1))
+        assertFalse(data.contains<Any>(1))
         assertFalse(empty.contains("foo"))
         assertFalse(empty.contains("bar"))
         assertFalse(empty.contains("baz"))
-        assertFalse(empty.contains(1))
+        assertFalse(empty.contains<Any>(1))
     }
 
     @Test