diff --git a/README.md b/README.md
index dc7b9b5..bb82ed3 100644
--- a/README.md
+++ b/README.md
@@ -11,12 +11,11 @@ Blog entry on the topic: [DocC 📚 Archived and Analyzed](https://www.alwaysrig
 
 ### Status
 
-2021-07-02: The module can import all documents created in the
+The module can import all documents created in the
 [SlothCreator](https://developer.apple.com/documentation/xcode/slothcreator_building_docc_documentation_in_xcode)
 example.
 
-It should be pretty complete, but specifically lacks testing with Objective-C
-documentation.
+It should be pretty complete.
 
 If you find an issue (usually signalled by an assertion or fatalError),
 please [*let us know*](https://github.com/DoccZz/DocCArchive/issues),
@@ -24,8 +23,7 @@ we'll fix missing cases ASAP (PRs are welcome too).
 
 TODO:
 - [ ] Add DocC documentation! 🤦‍♀️
-- [ ] ~~Test with Objective-C documentation.~~ (looks like ObjC is unsupported by DocC?)
-- [ ] Add a testsuite (existing one not added for sizing concerns).
+- [x] Add a testsuite (existing one not added for sizing concerns).
 
 
 ### Usage in a Swift Package
diff --git a/Sources/DocCArchive/Schema_0_1/Document.swift b/Sources/DocCArchive/Schema_0_1/Document.swift
index 4d186e9..50a4132 100644
--- a/Sources/DocCArchive/Schema_0_1/Document.swift
+++ b/Sources/DocCArchive/Schema_0_1/Document.swift
@@ -64,7 +64,7 @@ extension DocCArchive.DocCSchema_0_1 {
     
     public var schemaVersion          : SchemaVersion
     public var identifier             : Identifier
-    public var documentVersion        : Int
+    public var documentVersion        : Int?
     public var kind                   : Kind
     public var metadata               : MetaData
     public var hierarchy              : Hierarchy
@@ -81,7 +81,7 @@ extension DocCArchive.DocCSchema_0_1 {
       var ms = "<Document:"
       ms += " schema=\(schemaVersion)"
       ms += " identifier=\(identifier)"
-      ms += " version=\(documentVersion)"
+      if let v = documentVersion { ms += " version=\(v)" }
       ms += " \(kind)"
       ms += " \(metadata)"
       ms += " \(hierarchy)"
diff --git a/Tests/DocCArchiveTests/DocumentDecodingTests.swift b/Tests/DocCArchiveTests/DocumentDecodingTests.swift
index caf4813..58a3138 100644
--- a/Tests/DocCArchiveTests/DocumentDecodingTests.swift
+++ b/Tests/DocCArchiveTests/DocumentDecodingTests.swift
@@ -13,8 +13,27 @@ final class DocumentDecodingTests: XCTestCase {
 
   static var allTests = [
     ( "testSimpleTutorial"            , testSimpleTutorial            ),
+    ( "testIssue7Fail"                , testIssue7Fail                ),
     ( "testAllDataJSONInSlothCreator" , testAllDataJSONInSlothCreator )
   ]
+  
+  func testIssue7Fail() throws {
+    let url  = Fixtures.baseURL.appendingPathComponent("Issue7Fail.json")
+    let data = try Data(contentsOf: url)
+    
+    let document : DocCArchive.Document
+    
+    print("Decoding:", url.path)
+    do {
+      document = try JSONDecoder().decode(DocCArchive.Document.self, from: data)
+    }
+    catch {
+      print("ERROR:", error)
+      XCTAssert(false, "failed to decode: \(error)")
+      return
+    }
+    XCTAssertEqual(document.schemaVersion, .init(major: 0, minor: 1, patch: 0))
+  }
 
   func testSimpleTutorial() throws {
     let url  = Fixtures.baseURL.appendingPathComponent("SimpleTutorial.json")
diff --git a/Tests/DocCArchiveTests/Fixtures.swift b/Tests/DocCArchiveTests/Fixtures.swift
index ffce668..b7a9e0b 100644
--- a/Tests/DocCArchiveTests/Fixtures.swift
+++ b/Tests/DocCArchiveTests/Fixtures.swift
@@ -18,4 +18,9 @@ enum Fixtures {
     FileManager.default.homeDirectoryForCurrentUser
       .appendingPathComponent("Downloads")
       .appendingPathComponent("SlothCreator.doccarchive")
+  
+  static let failJSON1 =
+  """
+  {"primaryContentSections":[{"kind":"declarations","declarations":[{"tokens":[{"kind":"keyword","text":"struct"},{"kind":"text","text":" "},{"kind":"identifier","text":"HTTP"}],"languages":["swift"],"platforms":["macOS"]}]}],"schemaVersion":{"major":0,"minor":1,"patch":0},"sections":[],"variants":[{"paths":["/documentation/llabsnetwork/http"],"traits":[{"interfaceLanguage":"swift"}]}],"identifier":{"url":"doc://LLabsNetwork/documentation/LLabsNetwork/HTTP","interfaceLanguage":"swift"},"abstract":[{"type":"text","text":"No overview available."}],"kind":"symbol","metadata":{"fragments":[{"kind":"keyword","text":"struct"},{"kind":"text","text":" "},{"kind":"identifier","text":"HTTP"}],"title":"HTTP","roleHeading":"Structure","role":"symbol","symbolKind":"struct","externalID":"s:12LLabsNetwork4HTTPV","modules":[{"name":"LLabsNetwork"}],"navigatorTitle":[{"kind":"identifier","text":"HTTP"}]},"hierarchy":{"paths":[["doc://LLabsNetwork/documentation/LLabsNetwork"]]},"topicSections":[{"title":"Enumerations","identifiers":["doc://LLabsNetwork/documentation/LLabsNetwork/HTTP/Code","doc://LLabsNetwork/documentation/LLabsNetwork/HTTP/Method"]}],"references":{"doc://LLabsNetwork/documentation/LLabsNetwork/HTTP":{"role":"symbol","title":"HTTP","fragments":[{"kind":"keyword","text":"struct"},{"kind":"text","text":" "},{"kind":"identifier","text":"HTTP"}],"abstract":[],"identifier":"doc://LLabsNetwork/documentation/LLabsNetwork/HTTP","kind":"symbol","type":"topic","navigatorTitle":[{"kind":"identifier","text":"HTTP"}],"url":"/documentation/llabsnetwork/http"},"doc://LLabsNetwork/documentation/LLabsNetwork/HTTP/Method":{"role":"symbol","title":"HTTP.Method","fragments":[{"kind":"keyword","text":"enum"},{"kind":"text","text":" "},{"kind":"identifier","text":"Method"}],"abstract":[{"type":"text","text":"HTTP verbs."}],"identifier":"doc://LLabsNetwork/documentation/LLabsNetwork/HTTP/Method","kind":"symbol","type":"topic","navigatorTitle":[{"kind":"identifier","text":"Method"}],"url":"/documentation/llabsnetwork/http/method"},"doc://LLabsNetwork/documentation/LLabsNetwork/HTTP/Code":{"role":"symbol","title":"HTTP.Code","fragments":[{"kind":"keyword","text":"enum"},{"kind":"text","text":" "},{"kind":"identifier","text":"Code"}],"abstract":[{"type":"text","text":"A list of HTTP codes"}],"identifier":"doc://LLabsNetwork/documentation/LLabsNetwork/HTTP/Code","kind":"symbol","type":"topic","navigatorTitle":[{"kind":"identifier","text":"Code"}],"url":"/documentation/llabsnetwork/http/code"},"doc://LLabsNetwork/documentation/LLabsNetwork":{"role":"collection","title":"LLabsNetwork","abstract":[],"identifier":"doc://LLabsNetwork/documentation/LLabsNetwork","kind":"symbol","type":"topic","url":"/documentation/llabsnetwork"}}}
+  """
 }
diff --git a/Tests/DocCArchiveTests/Fixtures/Issue7Fail.json b/Tests/DocCArchiveTests/Fixtures/Issue7Fail.json
new file mode 100644
index 0000000..9451700
--- /dev/null
+++ b/Tests/DocCArchiveTests/Fixtures/Issue7Fail.json
@@ -0,0 +1,92 @@
+{
+  "primaryContentSections":[
+    {"kind":"declarations",
+     "declarations":[
+       {"tokens":[
+         {"kind":"keyword","text":"struct"},
+         {"kind":"text","text":" "},
+         {"kind":"identifier","text":"HTTP"}
+        ],
+        "languages":["swift"],
+        "platforms":["macOS"]
+       }
+     ]
+    }
+  ],
+  "schemaVersion":{"major":0,"minor":1,"patch":0},
+  "sections":[],
+  "variants":[
+    {"paths":["/documentation/llabsnetwork/http"],
+     "traits":[{"interfaceLanguage":"swift"}]}
+  ],
+  "identifier":{
+    "url":"doc://LLabsNetwork/documentation/LLabsNetwork/HTTP",
+    "interfaceLanguage":"swift"
+  },
+  "abstract":[
+    {"type":"text","text":"No overview available."}],
+  "kind":"symbol",
+  "metadata":{
+    "fragments":[
+      {"kind":"keyword","text":"struct"},
+      {"kind":"text","text":" "},
+      {"kind":"identifier","text":"HTTP"}
+    ],
+    "title":"HTTP",
+    "roleHeading":"Structure",
+    "role":"symbol",
+    "symbolKind":"struct",
+    "externalID":"s:12LLabsNetwork4HTTPV",
+    "modules":[{"name":"LLabsNetwork"}],
+    "navigatorTitle":[{"kind":"identifier","text":"HTTP"}]
+    
+  },
+  "hierarchy":{
+    "paths":[["doc://LLabsNetwork/documentation/LLabsNetwork"]]
+  },
+  "topicSections":[
+    {"title":"Enumerations","identifiers":["doc://LLabsNetwork/documentation/LLabsNetwork/HTTP/Code","doc://LLabsNetwork/documentation/LLabsNetwork/HTTP/Method"]}
+  ],
+  "references":{
+    "doc://LLabsNetwork/documentation/LLabsNetwork/HTTP":{
+      "role":"symbol","title":"HTTP",
+      "fragments":[{"kind":"keyword","text":"struct"},{"kind":"text","text":" "},{"kind":"identifier","text":"HTTP"}],
+      "abstract":[],
+      "identifier":"doc://LLabsNetwork/documentation/LLabsNetwork/HTTP",
+      "kind":"symbol","type":"topic",
+      "navigatorTitle":[
+        {"kind":"identifier","text":"HTTP"}
+      ],
+      "url":"/documentation/llabsnetwork/http"
+    },
+    "doc://LLabsNetwork/documentation/LLabsNetwork/HTTP/Method":{
+      "role":"symbol","title":"HTTP.Method",
+      "fragments":[
+        {"kind":"keyword","text":"enum"},
+        {"kind":"text","text":" "},
+        {"kind":"identifier","text":"Method"}
+      ],
+      "abstract":[{"type":"text","text":"HTTP verbs."}],
+      "identifier":"doc://LLabsNetwork/documentation/LLabsNetwork/HTTP/Method",
+      "kind":"symbol","type":"topic",
+      "navigatorTitle":[
+        {"kind":"identifier","text":"Method"}
+      ],
+      "url":"/documentation/llabsnetwork/http/method"
+    },
+    "doc://LLabsNetwork/documentation/LLabsNetwork/HTTP/Code":{
+      "role":"symbol","title":"HTTP.Code",
+      "fragments":[{"kind":"keyword","text":"enum"},{"kind":"text","text":" "},{"kind":"identifier","text":"Code"}],
+      "abstract":[{"type":"text","text":"A list of HTTP codes"}],
+      "identifier":"doc://LLabsNetwork/documentation/LLabsNetwork/HTTP/Code",
+      "kind":"symbol","type":"topic",
+      "navigatorTitle":[{"kind":"identifier","text":"Code"}],
+      "url":"/documentation/llabsnetwork/http/code"
+    },
+    "doc://LLabsNetwork/documentation/LLabsNetwork":{
+      "role":"collection","title":"LLabsNetwork","abstract":[],
+      "identifier":"doc://LLabsNetwork/documentation/LLabsNetwork",
+      "kind":"symbol","type":"topic","url":"/documentation/llabsnetwork"
+    }
+  }
+}