diff --git a/privkey_test.go b/privkey_test.go
new file mode 100644
index 00000000..49c89bc0
--- /dev/null
+++ b/privkey_test.go
@@ -0,0 +1,58 @@
+// Copyright (c) 2013-2014 Conformal Systems LLC.
+// Use of this source code is governed by an ISC
+// license that can be found in the LICENSE file.
+
+package btcec_test
+
+import (
+	"bytes"
+	"testing"
+
+	"github.com/conformal/btcec"
+)
+
+func TestPrivKeys(t *testing.T) {
+	tests := []struct {
+		name string
+		key  []byte
+	}{
+		{
+			name: "check curve",
+			key: []byte{
+				0xea, 0xf0, 0x2c, 0xa3, 0x48, 0xc5, 0x24, 0xe6,
+				0x39, 0x26, 0x55, 0xba, 0x4d, 0x29, 0x60, 0x3c,
+				0xd1, 0xa7, 0x34, 0x7d, 0x9d, 0x65, 0xcf, 0xe9,
+				0x3c, 0xe1, 0xeb, 0xff, 0xdc, 0xa2, 0x26, 0x94,
+			},
+		},
+	}
+
+	for _, test := range tests {
+		priv, pub := btcec.PrivKeyFromBytes(btcec.S256(), test.key)
+
+		_, err := btcec.ParsePubKey(
+			pub.SerializeUncompressed(), btcec.S256())
+		if err != nil {
+			t.Errorf("%s privkey: %v", test.name, err)
+			continue
+		}
+
+		hash := []byte{0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9}
+		sig, err := priv.Sign(hash)
+		if err != nil {
+			t.Errorf("%s could not sign: %v", test.name, err)
+			continue
+		}
+
+		if !sig.Verify(hash, pub) {
+			t.Errorf("%s could not verify: %v", test.name, err)
+			continue
+		}
+
+		serializedKey := priv.Serialize()
+		if !bytes.Equal(serializedKey, test.key) {
+			t.Errorf("%s unexpected serialized bytes - got: %x, "+
+				"want: %x", test.name, serializedKey, test.key)
+		}
+	}
+}
diff --git a/pubkey_test.go b/pubkey_test.go
index 3ad6def4..5a144afd 100644
--- a/pubkey_test.go
+++ b/pubkey_test.go
@@ -12,11 +12,6 @@ import (
 	"github.com/davecgh/go-spew/spew"
 )
 
-type privKeyTest struct {
-	name string
-	key  []byte
-}
-
 type pubKeyTest struct {
 	name    string
 	key     []byte
@@ -24,18 +19,6 @@ type pubKeyTest struct {
 	isValid bool
 }
 
-var privKeyTests = []privKeyTest{
-	{
-		name: "check curve",
-		key: []byte{
-			0xea, 0xf0, 0x2c, 0xa3, 0x48, 0xc5, 0x24, 0xe6,
-			0x39, 0x26, 0x55, 0xba, 0x4d, 0x29, 0x60, 0x3c,
-			0xd1, 0xa7, 0x34, 0x7d, 0x9d, 0x65, 0xcf, 0xe9,
-			0x3c, 0xe1, 0xeb, 0xff, 0xdc, 0xa2, 0x26, 0x94,
-		},
-	},
-}
-
 var pubKeyTests = []pubKeyTest{
 	// pubkey from bitcoin blockchain tx
 	// 0437cd7f8525ceed2324359c2d0ba26006d92d85
@@ -218,31 +201,6 @@ var pubKeyTests = []pubKeyTest{
 	},
 }
 
-func TestPrivKeys(t *testing.T) {
-	for _, test := range privKeyTests {
-		priv, pub := btcec.PrivKeyFromBytes(btcec.S256(), test.key)
-
-		_, err := btcec.ParsePubKey(
-			pub.SerializeUncompressed(), btcec.S256())
-		if err != nil {
-			t.Errorf("%s privkey: %v", test.name, err)
-			continue
-		}
-
-		hash := []byte{0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9}
-		sig, err := priv.Sign(hash)
-		if err != nil {
-			t.Errorf("%s could not sign: %v", test.name, err)
-			continue
-		}
-
-		if !sig.Verify(hash, pub) {
-			t.Errorf("%s could not verify: %v", test.name, err)
-			continue
-		}
-	}
-}
-
 func TestPubKeys(t *testing.T) {
 	for _, test := range pubKeyTests {
 		pk, err := btcec.ParsePubKey(test.key, btcec.S256())