single_item_range.diff

diff --git a/range_test.go b/range_test.go
index c3b4c71..3f380aa 100644
--- a/range_test.go
+++ b/range_test.go
@@ -200,6 +200,12 @@ func TestBuildVerifyRangeProof(t *testing.T) {
 			if !VerifyRangeProof(leafData[start*leafSize:end*leafSize], blake, leafSize, start, end, proof, smallRoot) {
 				t.Errorf("BuildRangeProof constructed an incorrect proof for range %v-%v", start, end)
 			}
+			if end == start + 1 {
+				singleProof := append([][]byte{leafData[start*leafSize:end*leafSize]}, proof...)
+				if !VerifyProof(blake, smallRoot, singleProof, uint64(start), 12) {
+					t.Errorf("!!!")
+				}
+			}
 		}
 	}