diff --git a/roaring/roaring.go b/roaring/roaring.go
index 496c51622..1ddc5f798 100644
--- a/roaring/roaring.go
+++ b/roaring/roaring.go
@@ -5518,7 +5518,6 @@ func (b *Bitmap) DifferenceInPlace(others ...*Bitmap) {
 				} else {
 					break
 				}
-
 			}
 
 			if targetKey == iKey {
diff --git a/row_test.go b/row_test.go
index 5680b8870..a4740c897 100644
--- a/row_test.go
+++ b/row_test.go
@@ -166,7 +166,6 @@ func eq(a, b []uint64) bool {
 func TestRow_DifferenceInPlace2(t *testing.T) {
 	lucky := []uint64{1, 3, 7, 9, 13, 15, 21, 25, 31, 33, 37, 43, 49, 51, 63, 67, 69, 73, 75, 79, 87, 93, 99, 105, 111, 115, 127, 129, 133, 135, 141, 151, 159, 163, 169, 171, 189, 193, 195, 201, 205, 211, 219, 223, 231, 235, 237, 241, 259, 261, 267, 273, 283, 285, 289, 297}
 	src := pilosa.NewRow(lucky...)
-	fmt.Println(src.Columns())
 	row1 := pilosa.NewRow()
 	m := uint64(9)
 	for i := m; i <= lucky[len(lucky)-1]; i += m {
@@ -190,10 +189,10 @@ func TestRow_DifferenceInPlace2(t *testing.T) {
 	res5 := src.Difference(row1, row2, row3, row4)
 	res6 := src.Difference(row4, row3, row2, row1)
 	res7 := src.Difference(row4).Difference(row3).Difference(row2).Difference(row1)
-	if eq(res5.Columns(), res6.Columns()) {
-		t.Fatal("should match")
+	if !eq(res5.Columns(), res6.Columns()) {
+		t.Fatalf("results do not match: %v, %v", res5.Columns(), res6.Columns())
 	}
-	if eq(res6.Columns(), res7.Columns()) {
-		t.Fatal("should match")
+	if !eq(res6.Columns(), res7.Columns()) {
+		t.Fatalf("results do not match: %v, %v", res6.Columns(), res7.Columns())
 	}
 }