diff --git a/roaring/roaring.go b/roaring/roaring.go
index a2ddecb62..b3b895b38 100644
--- a/roaring/roaring.go
+++ b/roaring/roaring.go
@@ -163,9 +163,8 @@ func (b *Bitmap) Add(a ...uint64) (changed bool, err error) {
 		}
 
 		// Apply to the in-memory bitmap.
-		if op.apply(b) {
+		if b.DirectAdd(v) {
 			changed = true
-
 		}
 	}
 
diff --git a/roaring/roaring_test.go b/roaring/roaring_test.go
index 4c3d15a4d..5da9fc38c 100644
--- a/roaring/roaring_test.go
+++ b/roaring/roaring_test.go
@@ -1498,6 +1498,41 @@ func BenchmarkSliceDescending(b *testing.B) {
 		for col := uint64(pilosa.ShardWidth); col > uint64(0); col-- {
 			bm.Add(col)
 		}
+		bm.Add(0)
+	}
+}
+
+func BenchmarkSliceAscendingStriped(b *testing.B) {
+	for n := 0; n < b.N; n++ {
+		bm := roaring.NewFileBitmap()
+		l := uint64(pilosa.ShardWidth / 8)
+		for col := uint64(0); col < l; col++ {
+			bm.Add(l*0 + col)
+			bm.Add(l*1 + col)
+			bm.Add(l*2 + col)
+			bm.Add(l*3 + col)
+			bm.Add(l*4 + col)
+			bm.Add(l*5 + col)
+			bm.Add(l*6 + col)
+			bm.Add(l*7 + col)
+		}
+	}
+}
+
+func BenchmarkSliceDescendingStriped(b *testing.B) {
+	for n := 0; n < b.N; n++ {
+		bm := roaring.NewFileBitmap()
+		l := uint64(pilosa.ShardWidth / 8)
+		for col := uint64(l); col < l+1; col-- {
+			bm.Add(l*7 + col)
+			bm.Add(l*6 + col)
+			bm.Add(l*5 + col)
+			bm.Add(l*4 + col)
+			bm.Add(l*3 + col)
+			bm.Add(l*2 + col)
+			bm.Add(l*1 + col)
+			bm.Add(l*0 + col)
+		}
 	}
 }