diff --git a/libraries/stdlib/common/src/kotlin/CollectionsH.kt b/libraries/stdlib/common/src/kotlin/CollectionsH.kt
index 15fe1843055..66bc88c0659 100644
--- a/libraries/stdlib/common/src/kotlin/CollectionsH.kt
+++ b/libraries/stdlib/common/src/kotlin/CollectionsH.kt
@@ -158,4 +158,4 @@ header operator fun <K, V> MutableMap<K, V>.set(key: K, value: V): Unit
 
 // from Grouping.kt
 public header fun <T, K> Grouping<T, K>.eachCount(): Map<K, Int>
-public header inline fun <T, K> Grouping<T, K>.eachSumOf(valueSelector: (T) -> Int): Map<K, Int>
\ No newline at end of file
+// public header inline fun <T, K> Grouping<T, K>.eachSumOf(valueSelector: (T) -> Int): Map<K, Int>
\ No newline at end of file
diff --git a/libraries/stdlib/test/collections/GroupingTest.kt b/libraries/stdlib/test/collections/GroupingTest.kt
index f3702df42fe..57db6b9c4ba 100644
--- a/libraries/stdlib/test/collections/GroupingTest.kt
+++ b/libraries/stdlib/test/collections/GroupingTest.kt
@@ -1,7 +1,6 @@
 package test.collections
 
 import org.junit.Test
-import java.util.*
 import kotlin.test.*
 
 class GroupingTest {
diff --git a/libraries/tools/binary-compatibility-validator/reference-public-api/kotlin-stdlib.txt b/libraries/tools/binary-compatibility-validator/reference-public-api/kotlin-stdlib.txt
index 9251866d8a1..161d3002b26 100644
--- a/libraries/tools/binary-compatibility-validator/reference-public-api/kotlin-stdlib.txt
+++ b/libraries/tools/binary-compatibility-validator/reference-public-api/kotlin-stdlib.txt
@@ -1619,8 +1619,6 @@ public final class kotlin/collections/GroupingKt {
 	public static final fun aggregateTo (Lkotlin/collections/Grouping;Ljava/util/Map;Lkotlin/jvm/functions/Function4;)Ljava/util/Map;
 	public static final fun eachCount (Lkotlin/collections/Grouping;)Ljava/util/Map;
 	public static final fun eachCountTo (Lkotlin/collections/Grouping;Ljava/util/Map;)Ljava/util/Map;
-	public static final fun eachSumOf (Lkotlin/collections/Grouping;Lkotlin/jvm/functions/Function1;)Ljava/util/Map;
-	public static final fun eachSumOfTo (Lkotlin/collections/Grouping;Ljava/util/Map;Lkotlin/jvm/functions/Function1;)Ljava/util/Map;
 	public static final fun fold (Lkotlin/collections/Grouping;Ljava/lang/Object;Lkotlin/jvm/functions/Function2;)Ljava/util/Map;
 	public static final fun fold (Lkotlin/collections/Grouping;Lkotlin/jvm/functions/Function2;Lkotlin/jvm/functions/Function3;)Ljava/util/Map;
 	public static final fun foldTo (Lkotlin/collections/Grouping;Ljava/util/Map;Ljava/lang/Object;Lkotlin/jvm/functions/Function2;)Ljava/util/Map;