diff --git a/msgblock_test.go b/msgblock_test.go
index 3a556aa1..c3a441af 100644
--- a/msgblock_test.go
+++ b/msgblock_test.go
@@ -530,7 +530,7 @@ var blockOneBytes = []byte{
 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Previous output hash
 	0xff, 0xff, 0xff, 0xff, // Prevous output index
 	0x07,                                     // Varint for length of signature script
-	0x04, 0xff, 0xff, 0x00, 0x1d, 0x01, 0x04, // Signature script
+	0x04, 0xff, 0xff, 0x00, 0x1d, 0x01, 0x04, // Signature script (coinbase)
 	0xff, 0xff, 0xff, 0xff, // Sequence
 	0x01,                                           // Varint for number of transaction outputs
 	0x00, 0xf2, 0x05, 0x2a, 0x01, 0x00, 0x00, 0x00, // Transaction amount
@@ -544,7 +544,7 @@ var blockOneBytes = []byte{
 	0xe0, 0xa6, 0x04, 0xf8, 0x14, 0x17, 0x81, 0xe6,
 	0x22, 0x94, 0x72, 0x11, 0x66, 0xbf, 0x62, 0x1e,
 	0x73, 0xa8, 0x2c, 0xbf, 0x23, 0x42, 0xc8, 0x58,
-	0xee,                   // 65-byte signature
+	0xee,                   // 65-byte uncompressed public key
 	0xac,                   // OP_CHECKSIG
 	0x00, 0x00, 0x00, 0x00, // Lock time
 }