diff --git a/crypto/merkle/simple_proof_test.go b/crypto/merkle/simple_proof_test.go
index 1175ce3cc..1a517905b 100644
--- a/crypto/merkle/simple_proof_test.go
+++ b/crypto/merkle/simple_proof_test.go
@@ -16,7 +16,7 @@ func TestSimpleProofValidateBasic(t *testing.T) {
 		{"Negative Total", func(sp *SimpleProof) { sp.Total = -1 }, "negative Total"},
 		{"Negative Index", func(sp *SimpleProof) { sp.Index = -1 }, "negative Index"},
 		{"Invalid LeafHash", func(sp *SimpleProof) { sp.LeafHash = make([]byte, 10) }, "expected LeafHash size to be 32, got 10"},
-		{"Too many Aunts", func(sp *SimpleProof) { sp.Aunts = make([][]byte, maxAunts+1) }, "expected no more than 101 aunts, got 101"},
+		{"Too many Aunts", func(sp *SimpleProof) { sp.Aunts = make([][]byte, maxAunts+1) }, "expected no more than 100 aunts, got 101"},
 		{"Invalid Aunt", func(sp *SimpleProof) { sp.Aunts[0] = make([]byte, 10) }, "expected Aunts#0 size to be 32, got 10"},
 	}