diff --git a/src/key/factory.js b/src/key/factory.js
index 14dcaacb..292c8370 100644
--- a/src/key/factory.js
+++ b/src/key/factory.js
@@ -198,7 +198,8 @@ async function wrapKeyObject(secretKeyPacket, secretSubkeyPackets, options) {
     ], config.prefer_hash_algorithm);
     signaturePacket.preferredCompressionAlgorithms = createdPreferredAlgos([
       enums.compression.zlib,
-      enums.compression.zip
+      enums.compression.zip,
+      enums.compression.uncompressed
     ], config.compression);
     if (index === 0) {
       signaturePacket.isPrimaryUserID = true;
diff --git a/test/general/key.js b/test/general/key.js
index 6884eb7f..18badd00 100644
--- a/test/general/key.js
+++ b/test/general/key.js
@@ -1679,7 +1679,7 @@ function versionSpecificTests() {
       const hash = openpgp.enums.hash;
       expect(key.users[0].selfCertifications[0].preferredHashAlgorithms).to.eql([hash.sha256, hash.sha512, hash.sha1]);
       const compr = openpgp.enums.compression;
-      expect(key.users[0].selfCertifications[0].preferredCompressionAlgorithms).to.eql([compr.zlib, compr.zip]);
+      expect(key.users[0].selfCertifications[0].preferredCompressionAlgorithms).to.eql([compr.zlib, compr.zip, compr.uncompressed]);
       expect(key.users[0].selfCertifications[0].features).to.eql(openpgp.config.v5_keys ? [7] : [1]);
     };
     const opt = {numBits: 512, userIds: 'test <a@b.com>', passphrase: 'hello'};
@@ -1721,7 +1721,7 @@ function versionSpecificTests() {
       const hash = openpgp.enums.hash;
       expect(key.users[0].selfCertifications[0].preferredHashAlgorithms).to.eql([hash.sha224, hash.sha256, hash.sha512, hash.sha1]);
       const compr = openpgp.enums.compression;
-      expect(key.users[0].selfCertifications[0].preferredCompressionAlgorithms).to.eql([compr.zlib, compr.zip]);
+      expect(key.users[0].selfCertifications[0].preferredCompressionAlgorithms).to.eql([compr.zlib, compr.zip, compr.uncompressed]);
       expect(key.users[0].selfCertifications[0].features).to.eql(openpgp.config.v5_keys ? [7] : [1]);
     };
     const opt = {numBits: 512, userIds: 'test <a@b.com>', passphrase: 'hello'};