diff --git a/akka-persistence/src/main/scala/akka/persistence/Persistence.scala b/akka-persistence/src/main/scala/akka/persistence/Persistence.scala
index 3c09eef9c1..adeaf80a6e 100644
--- a/akka-persistence/src/main/scala/akka/persistence/Persistence.scala
+++ b/akka-persistence/src/main/scala/akka/persistence/Persistence.scala
@@ -449,9 +449,9 @@ class Persistence(val system: ExtendedActorSystem) extends Extension {
    * different slice for a persistence id than what was used before, which would
    * result in invalid eventsBySlices.
    *
-   * `numberOfSlices` is 128
+   * `numberOfSlices` is 1024
    */
-  final def numberOfSlices: Int = 128
+  final def numberOfSlices: Int = 1024
 
   /**
    * A slice is deterministically defined based on the persistence id. The purpose is to
@@ -464,8 +464,8 @@ class Persistence(val system: ExtendedActorSystem) extends Extension {
   /**
    * Scala API: Split the total number of slices into ranges by the given `numberOfRanges`.
    *
-   * For example, `numberOfSlices` is 128 and given 4 `numberOfRanges` this method will
-   * return ranges (0 to 31), (32 to 63), (64 to 93) and (94 to 127).
+   * For example, `numberOfSlices` is 1024 and given 4 `numberOfRanges` this method will
+   * return ranges (0 to 255), (256 to 511), (512 to 767) and (768 to 1023).
    */
   final def sliceRanges(numberOfRanges: Int): immutable.IndexedSeq[Range] = {
     val rangeSize = numberOfSlices / numberOfRanges
@@ -481,7 +481,7 @@ class Persistence(val system: ExtendedActorSystem) extends Extension {
    * Java API: Split the total number of slices into ranges by the given `numberOfRanges`.
    *
    * For example, `numberOfSlices` is 128 and given 4 `numberOfRanges` this method will
-   * return ranges (0 to 31), (32 to 63), (64 to 93) and (94 to 127).
+   * return ranges (0 to 255), (256 to 511), (512 to 767) and (768 to 1023).
    */
   final def getSliceRanges(numberOfRanges: Int): java.util.List[Pair[Integer, Integer]] = {
     import akka.util.ccompat.JavaConverters._
diff --git a/akka-persistence/src/test/scala/akka/persistence/SliceRangesSpec.scala b/akka-persistence/src/test/scala/akka/persistence/SliceRangesSpec.scala
index 9ae929c420..01b3a1079e 100644
--- a/akka-persistence/src/test/scala/akka/persistence/SliceRangesSpec.scala
+++ b/akka-persistence/src/test/scala/akka/persistence/SliceRangesSpec.scala
@@ -16,7 +16,7 @@ class SliceRangesSpec extends PersistenceSpec(PersistenceSpec.config("inmem", "L
 
   "Persistence slices" must {
     "have fixed numberOfSlices" in {
-      persistence.numberOfSlices should ===(128)
+      persistence.numberOfSlices should ===(1024)
     }
 
     "be deterministic from persistence id" in {
@@ -35,13 +35,13 @@ class SliceRangesSpec extends PersistenceSpec(PersistenceSpec.config("inmem", "L
     }
 
     "create ranges" in {
-      persistence.sliceRanges(4) should ===(Vector(0 to 31, 32 to 63, 64 to 95, 96 to 127))
-      persistence.sliceRanges(1) should ===(Vector(0 to 127))
+      persistence.sliceRanges(4) should ===(Vector(0 to 255, 256 to 511, 512 to 767, 768 to 1023))
+      persistence.sliceRanges(1) should ===(Vector(0 to 1023))
     }
 
     "create ranges for Java" in {
       persistence.getSliceRanges(4) shouldBe
-      util.Arrays.asList(Pair.create(0, 31), Pair.create(32, 63), Pair.create(64, 95), Pair.create(96, 127))
+      util.Arrays.asList(Pair.create(0, 255), Pair.create(256, 511), Pair.create(512, 767), Pair.create(768, 1023))
     }
   }
 }