diff --git a/lib/key.js b/lib/key.js
index 78f194a..5545a8f 100644
--- a/lib/key.js
+++ b/lib/key.js
@@ -11,7 +11,13 @@ var DiffieHellman = require('./dhe');
 var errs = require('./errors');
 var utils = require('./utils');
 var PrivateKey = require('./private-key');
-var edCompat = require('./ed-compat');
+var edCompat;
+
+try {
+	edCompat = require('./ed-compat');
+} catch (e) {
+	/* Just continue through, and bail out if we try to use it. */
+}
 
 var InvalidAlgorithmError = errs.InvalidAlgorithmError;
 var KeyParseError = errs.KeyParseError;
@@ -144,7 +150,7 @@ Key.prototype.createVerify = function (hashAlgo) {
 	assert.string(hashAlgo, 'hash algorithm');
 
 	/* ED25519 is not supported by OpenSSL, use a javascript impl. */
-	if (this.type === 'ed25519')
+	if (this.type === 'ed25519' && edCompat !== undefined)
 		return (new edCompat.Verifier(this, hashAlgo));
 	if (this.type === 'curve25519')
 		throw (new Error('Curve25519 keys are not suitable for ' +
diff --git a/lib/private-key.js b/lib/private-key.js
index 13b62ce..dc3bc10 100644
--- a/lib/private-key.js
+++ b/lib/private-key.js
@@ -10,9 +10,15 @@ var Signature = require('./signature');
 var errs = require('./errors');
 var util = require('util');
 var utils = require('./utils');
-var edCompat = require('./ed-compat');
+var edCompat;
 var ed;
 
+try {
+	edCompat = require('./ed-compat');
+} catch (e) {
+	/* Just continue through, and bail out if we try to use it. */
+}
+
 var Key = require('./key');
 
 var InvalidAlgorithmError = errs.InvalidAlgorithmError;
@@ -132,7 +138,7 @@ PrivateKey.prototype.createSign = function (hashAlgo) {
 	assert.string(hashAlgo, 'hash algorithm');
 
 	/* ED25519 is not supported by OpenSSL, use a javascript impl. */
-	if (this.type === 'ed25519')
+	if (this.type === 'ed25519' && edCompat !== undefined)
 		return (new edCompat.Signer(this, hashAlgo));
 	if (this.type === 'curve25519')
 		throw (new Error('Curve25519 keys are not suitable for ' +
diff --git a/package.json b/package.json
index 79b8073..dd4406f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sshpk",
-  "version": "1.6.1",
+  "version": "1.6.2",
   "description": "A library for finding and using SSH public keys",
   "main": "lib/index.js",
   "scripts": {
@@ -30,7 +30,7 @@
     "url": "https://github.com/arekinath/node-sshpk/issues"
   },
   "engines": {
-    "node": ">=0.10.0"
+    "node": ">=0.8.0"
   },
   "directories": {
     "bin": "./bin",
diff --git a/test/dhe.js b/test/dhe.js
index c73fb6e..1c2cb71 100644
--- a/test/dhe.js
+++ b/test/dhe.js
@@ -12,6 +12,10 @@ var ED_KEY, ED2_KEY, EC_KEY, EC2_KEY, ECOUT_KEY, DS_KEY, DS2_KEY, DSOUT_KEY;
 var C_KEY, C2_KEY;
 var C_SSH;
 
+/* node 0.8 and earlier do not support key derivation properly */
+if (process.version.match(/^v0\.[0-9]\./))
+	return;
+
 test('setup', function (t) {
 	var k = fs.readFileSync(path.join(__dirname, 'id_ed25519'));
 	ED_KEY = sshpk.parsePrivateKey(k);
@@ -139,8 +143,7 @@ test('ecdhe reject diff curves', function (t) {
 });
 
 /* node 0.10 and earlier do not support DHE properly */
-if (process.version.match(/^v0\.10\./) ||
-    process.version.match(/^v0\.[0-9]\./))
+if (process.version.match(/^v0\.10\./))
 	return;
 
 test('dhe shared secret', function (t) {
diff --git a/test/private-key.js b/test/private-key.js
index ce3b666..0b1a754 100644
--- a/test/private-key.js
+++ b/test/private-key.js
@@ -194,6 +194,9 @@ test('PrivateKey#createSign on ECDSA 256 key', function (t) {
 	t.end();
 });
 
+if (process.version.match(/^v0\.[0-9]\./))
+	return;
+
 test('PrivateKey#createSign on ED25519 key', function (t) {
 	var s = KEY_ED25519.createSign('sha512');
 	s.write('foobar');
diff --git a/test/signature.js b/test/signature.js
index a2d4847..0a96f54 100644
--- a/test/signature.js
+++ b/test/signature.js
@@ -85,22 +85,6 @@ test('parse RSA sig in full wire SSH format and verify', function(t) {
 	t.end();
 });
 
-test('parse ED25519 sig in full wire SSH format and verify', function(t) {
-	var sig = sshpk.parseSignature(ED25519_SIG_SSH, 'ed25519', 'ssh');
-	var s = ED25519_KEY.createVerify();
-	s.update('foobar');
-	t.ok(s.verify(sig));
-	t.end();
-});
-
-test('sign with ED25519 key and convert to SSH format', function(t) {
-	var s = ED25519_KEY.createSign();
-	s.update('foobar');
-	var sig = s.sign();
-	t.strictEqual(sig.toString('ssh'), ED25519_SIG_SSH);
-	t.end();
-});
-
 test('convert DSA sig to SSH format and back', function(t) {
 	var sig = sshpk.parseSignature(DSA_SIG_ASN1, 'dsa', 'asn1');
 	t.strictEqual(sig.toString('asn1'), DSA_SIG_ASN1);
@@ -157,3 +141,22 @@ test('convert full wire SSH ECDSA-384 sig and verify', function(t) {
 	t.ok(s.verify(sig));
 	t.end();
 });
+
+if (process.version.match(/^v0\.[0-9]\./))
+	return;
+
+test('parse ED25519 sig in full wire SSH format and verify', function(t) {
+	var sig = sshpk.parseSignature(ED25519_SIG_SSH, 'ed25519', 'ssh');
+	var s = ED25519_KEY.createVerify();
+	s.update('foobar');
+	t.ok(s.verify(sig));
+	t.end();
+});
+
+test('sign with ED25519 key and convert to SSH format', function(t) {
+	var s = ED25519_KEY.createSign();
+	s.update('foobar');
+	var sig = s.sign();
+	t.strictEqual(sig.toString('ssh'), ED25519_SIG_SSH);
+	t.end();
+});