diff --git a/libraries/stdlib/jvm/testLongRunning/collections/IndexOverflowJVMTest.kt b/libraries/stdlib/jvm/testLongRunning/collections/IndexOverflowJVMTest.kt
index eb36138909a..40e6c78311b 100644
--- a/libraries/stdlib/jvm/testLongRunning/collections/IndexOverflowJVMTest.kt
+++ b/libraries/stdlib/jvm/testLongRunning/collections/IndexOverflowJVMTest.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2018 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
  * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
@@ -145,8 +145,8 @@ class IndexOverflowJVMTest {
     }
 
     @Test
-    fun scanReduceIndexedOverflow() {
-        assertIndexOverflow { maxIndexSequence.scanReduceIndexed { index, _, s -> checkIndexPositive(index); s }.forEach { } }
+    fun runningReduceIndexedOverflow() {
+        assertIndexOverflow { maxIndexSequence.runningReduceIndexed { index, _, s -> checkIndexPositive(index); s }.forEach { } }
     }
 
 
@@ -173,4 +173,4 @@ class IndexOverflowJVMTest {
         assertEquals(listOf(Int.MAX_VALUE.toLong(), Int.MAX_VALUE + 1L), range.drop(Int.MAX_VALUE))
     }
 
-}
\ No newline at end of file
+}
diff --git a/libraries/stdlib/test/text/StringTest.kt b/libraries/stdlib/test/text/StringTest.kt
index b89c84e29eb..8c92fe7513a 100644
--- a/libraries/stdlib/test/text/StringTest.kt
+++ b/libraries/stdlib/test/text/StringTest.kt
@@ -1397,7 +1397,7 @@ class StringTest {
     }
 
     @Test
-    fun scanReduceIndexed() = withOneCharSequenceArg { arg1 ->
+    fun runningReduceIndexed() = withOneCharSequenceArg { arg1 ->
         for (size in 0 until 4) {
             val expected = listOf(0, 1, 6, 27).take(size).map { it.toChar() }
             val source = arg1((0.toChar() until size.toChar()).joinToString(separator = ""))