diff --git a/src/config/config.js b/src/config/config.js
index 3f4b7776b..359accf5d 100644
--- a/src/config/config.js
+++ b/src/config/config.js
@@ -69,12 +69,11 @@ export default {
   aead_chunk_size_byte:     12,
   /**
    * Use V5 keys.
-   * **NOT INTEROPERABLE WITH OTHER OPENPGP IMPLEMENTATIONS**
-   * **FUTURE OPENPGP.JS VERSIONS MAY BREAK COMPATIBILITY WHEN USING THIS OPTION**
+   * Note: not all OpenPGP implementations are compatible with this option
    * @memberof module:config
    * @property {Boolean} v5_keys
    */
-  v5_keys:                  false,
+  v5_keys:                  true,
   /**
    * {@link https://tools.ietf.org/html/rfc4880#section-3.7.1.3|RFC4880 3.7.1.3}:
    * Iteration Count Byte for S2K (String to Key)
diff --git a/src/packet/signature.js b/src/packet/signature.js
index 1e04357fd..69fc711b7 100644
--- a/src/packet/signature.js
+++ b/src/packet/signature.js
@@ -99,8 +99,6 @@ function Signature(date = new Date()) {
 /**
  * parsing function for a signature packet (tag 2).
  * @param {String} bytes payload of a tag 2 packet
- * @param {Integer} position position to start reading from the bytes string
- * @param {Integer} len length of the packet or the remaining length of bytes at position
  * @returns {module:packet.Signature} object representation
  */
 Signature.prototype.read = function (bytes) {
diff --git a/test/general/key.js b/test/general/key.js
index 14e0e2287..d485db076 100644
--- a/test/general/key.js
+++ b/test/general/key.js
@@ -2496,6 +2496,8 @@ function versionSpecificTests() {
 
 describe('Key', function() {
   let rsaGenStub;
+  let v5_keysVal;
+  let aead_protectVal;
   let rsaGenValue = openpgp.crypto.publicKey.rsa.generate(openpgp.util.getWebCryptoAll() ? 2048 : 512, "10001");
 
   beforeEach(function() {
@@ -2508,11 +2510,25 @@ describe('Key', function() {
   });
 
   tryTests('V4', versionSpecificTests, {
-    if: !openpgp.config.ci
+    if: !openpgp.config.ci,
+    beforeEach: function() {
+      v5_keysVal = openpgp.config.v5_keys;
+      openpgp.config.v5_keys = false;
+    },
+    afterEach: function() {
+      openpgp.config.v5_keys = v5_keysVal;
+    }
   });
 
   tryTests('V4 - With Worker', versionSpecificTests, {
     if: typeof window !== 'undefined' && window.Worker,
+    beforeEach: function() {
+      v5_keysVal = openpgp.config.v5_keys;
+      openpgp.config.v5_keys = false;
+    },
+    afterEach: function() {
+      openpgp.config.v5_keys = v5_keysVal;
+    },
     before: async function() {
       try {
         await openpgp.initWorker({ path: '../dist/openpgp.worker.js' });
@@ -2525,8 +2541,6 @@ describe('Key', function() {
     }
   });
 
-  let v5_keysVal;
-  let aead_protectVal;
   tryTests('V5', versionSpecificTests, {
     if: !openpgp.config.ci,
     beforeEach: function() {
diff --git a/test/general/packet.js b/test/general/packet.js
index 31e37d187..d22dd5307 100644
--- a/test/general/packet.js
+++ b/test/general/packet.js
@@ -910,41 +910,41 @@ V+HOQJQxXJkVRYa3QrFUehiMzTeqqMdgC6ZqJy7+
     const keySize = openpgp.util.getWebCryptoAll() ? 2048 : 512; // webkit webcrypto accepts minimum 2048 bit keys
 
     return rsa.generate(keySize, "10001").then(function(mpiGen) {
-        let mpi = [mpiGen.n, mpiGen.e, mpiGen.d, mpiGen.p, mpiGen.q, mpiGen.u];
-        mpi = mpi.map(function(k) {
-          return new openpgp.MPI(k);
-        });
-        const testText = input.createSomeMessage();
+      let mpi = [mpiGen.n, mpiGen.e, mpiGen.d, mpiGen.p, mpiGen.q, mpiGen.u];
+      mpi = mpi.map(function(k) {
+        return new openpgp.MPI(k);
+      });
+      const testText = input.createSomeMessage();
 
-        key.params = mpi;
-        key.algorithm = "rsa_sign";
+      key.params = mpi;
+      key.algorithm = "rsa_sign";
 
-        const signed = new openpgp.packet.List();
-        const literal = new openpgp.packet.Literal();
-        const signature = new openpgp.packet.Signature();
+      const signed = new openpgp.packet.List();
+      const literal = new openpgp.packet.Literal();
+      const signature = new openpgp.packet.Signature();
 
-        literal.setText(testText);
+      literal.setText(testText);
 
-        signature.hashAlgorithm = 'sha256';
-        signature.publicKeyAlgorithm = 'rsa_sign';
-        signature.signatureType = 'text';
+      signature.hashAlgorithm = openpgp.enums.hash.sha256;
+      signature.publicKeyAlgorithm = openpgp.enums.publicKey.rsa_sign;
+      signature.signatureType = openpgp.enums.signature.text;
 
-        return signature.sign(key, literal).then(async () => {
+      return signature.sign(key, literal).then(async () => {
 
-          signed.push(literal);
-          signed.push(signature);
+        signed.push(literal);
+        signed.push(signature);
 
-          const raw = signed.write();
+        const raw = signed.write();
 
-          const signed2 = new openpgp.packet.List();
-          await signed2.read(raw);
-          signed2.concat(await openpgp.stream.readToEnd(signed2.stream, arr => arr));
+        const signed2 = new openpgp.packet.List();
+        await signed2.read(raw);
+        signed2.concat(await openpgp.stream.readToEnd(signed2.stream, arr => arr));
 
-          await Promise.all([
-            expect(signed2[1].verify(key, openpgp.enums.signature.text, signed2[0])).to.eventually.be.true,
-            openpgp.stream.pipe(signed2[0].getBytes(), new openpgp.stream.WritableStream())
-          ]);
-        });
+        await Promise.all([
+          expect(signed2[1].verify(key, openpgp.enums.signature.text, signed2[0])).to.eventually.be.true,
+          openpgp.stream.pipe(signed2[0].getBytes(), new openpgp.stream.WritableStream())
+        ]);
+      });
     });
   });
 });