diff --git a/source/net/yacy/cora/storage/Array.java b/source/net/yacy/cora/storage/Array.java
index e9c6a4415..15a03dc2e 100644
--- a/source/net/yacy/cora/storage/Array.java
+++ b/source/net/yacy/cora/storage/Array.java
@@ -146,7 +146,7 @@ public class Array {
                 job.latch.countUp();
             } catch (final InterruptedException e) {
             } else {
-                sort(nextJob, threaded);
+                sort(nextJob, false);
             }
         }
         if ((s = d - c) > 1) {
@@ -156,7 +156,7 @@ public class Array {
                 job.latch.countUp();
             } catch (final InterruptedException e) {
             } else {
-                sort(nextJob, threaded);
+                sort(nextJob, false);
             }
         }
     }
diff --git a/source/net/yacy/kelondro/index/RowCollection.java b/source/net/yacy/kelondro/index/RowCollection.java
index 417f21cc6..b766d734e 100644
--- a/source/net/yacy/kelondro/index/RowCollection.java
+++ b/source/net/yacy/kelondro/index/RowCollection.java
@@ -613,8 +613,9 @@ public class RowCollection implements Sortable<Row.Entry>, Iterable<Row.Entry>,
     }
 
     public final void sort() {
+        if (this.sortBound == this.chunkcount) return; // this is sorted
         net.yacy.cora.storage.Array.sort(this);
-        this.sortBound = size();
+        this.sortBound = this.chunkcount;
     }
 
     public static class partitionthread implements Callable<Integer> {