diff --git a/lib/pleroma/web/activity_pub/transmogrifier.ex b/lib/pleroma/web/activity_pub/transmogrifier.ex
index 2ebc526df..e5fb6e033 100644
--- a/lib/pleroma/web/activity_pub/transmogrifier.ex
+++ b/lib/pleroma/web/activity_pub/transmogrifier.ex
@@ -21,6 +21,10 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     Enum.at(actor, 0)
   end
 
+  def get_actor(%{"actor" => actor}) when is_map(actor) do
+    actor["id"]
+  end
+
   def get_actor(%{"actor" => actor_list}) do
     Enum.find(actor_list, fn %{"type" => type} -> type == "Person" end)
     |> Map.get("id")
@@ -38,6 +42,24 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     |> fix_emoji
     |> fix_tag
     |> fix_content_map
+    |> fix_addressing
+  end
+
+  def fix_addressing_list(map, field) do
+    if is_binary(map[field]) do
+      map
+      |> Map.put(field, [map[field]])
+    else
+      map
+    end
+  end
+
+  def fix_addressing(map) do
+    map
+    |> fix_addressing_list("to")
+    |> fix_addressing_list("cc")
+    |> fix_addressing_list("bto")
+    |> fix_addressing_list("bcc")
   end
 
   def fix_actor(%{"attributedTo" => actor} = object) do
@@ -143,7 +165,10 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
   def handle_incoming(%{"type" => "Create", "object" => %{"type" => objtype} = object} = data)
       when objtype in ["Article", "Note"] do
     actor = get_actor(data)
-    data = Map.put(data, "actor", actor)
+
+    data =
+      Map.put(data, "actor", actor)
+      |> fix_addressing
 
     with nil <- Activity.get_create_activity_by_object_ap_id(object["id"]),
          %User{} = user <- User.get_or_fetch_by_ap_id(data["actor"]) do
diff --git a/test/fixtures/httpoison_mock/puckipedia.com.json b/test/fixtures/httpoison_mock/puckipedia.com.json
new file mode 100644
index 000000000..d18dfbae7
--- /dev/null
+++ b/test/fixtures/httpoison_mock/puckipedia.com.json
@@ -0,0 +1 @@
+{"@context":["https://www.w3.org/ns/activitystreams","https://puckipedia.com/-/context"],"endpoints":"https://puckipedia.com/#endpoints","followers":"https://puckipedia.com/followers","following":"https://puckipedia.com/following","icon":{"mediaType":"image/png","type":"Image","url":"https://puckipedia.com/images/avatar.png"},"id":"https://puckipedia.com/","inbox":"https://puckipedia.com/inbox","kroeg:blocks":{"id":"https://puckipedia.com/blocks"},"liked":"https://puckipedia.com/liked","manuallyApprovesFollowers":false,"name":"HACKER TEEN PUCKIPEDIA 👩‍💻","outbox":"https://puckipedia.com/outbox","preferredUsername":"puckipedia","publicKey":{"id":"https://puckipedia.com/#key","owner":"https://puckipedia.com/","publicKeyPem":"-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvN05xIcFE0Qgany7Rht4\n0ZI5wu++IT7K5iSqRimBYkpoeHbVcT9RFlW+aWH/QJJW/YgZ7+LMr8AMCrKrwSpS\nCndyrpx4O4lZ3FNRLu7tbklh01rGZfE6R1SFfYBpvMvImc9nYT6iezYDbv6NkHku\no3aVhjql216XlA0OhIrqQme9sAdrLbjbMrTUS8douCTkDOX+JFj1ghHCqdYEMZJI\nOY9kovtgnqyxFLm0RsPGsO1+g/OVojqG+VqHz6O2lceaTVQLlnZ4gOhLVG1tVsA2\nRfXQK+R/VgXncYE+BlQVd/tcdGAz7CDL7PP3rP65gmARnafhGR96cCOi/KzlAXSO\nMwIDAQAB\n-----END PUBLIC KEY-----","type":[]},"summary":"<p>federated hacker teen<br/>\n[<a href=\"https://pronoun.is/she\">she</a>/<a href=\"https://pronoun.is/they\">they</a>]</p>","type":"Person","updated":"2017-12-19T16:56:29.7576707+00:00"}
\ No newline at end of file
diff --git a/test/fixtures/kroeg-post-activity.json b/test/fixtures/kroeg-post-activity.json
new file mode 100644
index 000000000..32dabd947
--- /dev/null
+++ b/test/fixtures/kroeg-post-activity.json
@@ -0,0 +1,50 @@
+{
+    "@context": [
+        "https://www.w3.org/ns/activitystreams",
+        "https://puckipedia.com/-/context"
+    ],
+    "actor": {
+        "endpoints": "https://puckipedia.com/#endpoints",
+        "followers": "https://puckipedia.com/followers",
+        "following": "https://puckipedia.com/following",
+        "icon": {
+            "mediaType": "image/png",
+            "type": "Image",
+            "url": "https://puckipedia.com/images/avatar.png"
+        },
+        "id": "https://puckipedia.com/",
+        "inbox": "https://puckipedia.com/inbox",
+        "kroeg:blocks": {
+            "id": "https://puckipedia.com/blocks"
+        },
+        "liked": "https://puckipedia.com/liked",
+        "manuallyApprovesFollowers": false,
+        "name": "HACKER TEEN PUCKIPEDIA \ud83d\udc69\u200d\ud83d\udcbb",
+        "outbox": "https://puckipedia.com/outbox",
+        "preferredUsername": "puckipedia",
+        "publicKey": {
+            "id": "https://puckipedia.com/#key",
+            "owner": "https://puckipedia.com/",
+            "publicKeyPem": "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvN05xIcFE0Qgany7Rht4\n0ZI5wu++IT7K5iSqRimBYkpoeHbVcT9RFlW+aWH/QJJW/YgZ7+LMr8AMCrKrwSpS\nCndyrpx4O4lZ3FNRLu7tbklh01rGZfE6R1SFfYBpvMvImc9nYT6iezYDbv6NkHku\no3aVhjql216XlA0OhIrqQme9sAdrLbjbMrTUS8douCTkDOX+JFj1ghHCqdYEMZJI\nOY9kovtgnqyxFLm0RsPGsO1+g/OVojqG+VqHz6O2lceaTVQLlnZ4gOhLVG1tVsA2\nRfXQK+R/VgXncYE+BlQVd/tcdGAz7CDL7PP3rP65gmARnafhGR96cCOi/KzlAXSO\nMwIDAQAB\n-----END PUBLIC KEY-----",
+            "type": []
+        },
+        "summary": "<p>federated hacker teen<br/>\n[<a href=\"https://pronoun.is/she\">she</a>/<a href=\"https://pronoun.is/they\">they</a>]</p>",
+        "type": "Person",
+        "updated": "2017-12-19T16:56:29.7576707+00:00"
+    },
+    "cc": "https://puckipedia.com/followers",
+    "id": "https://puckipedia.com/ae4ee4e8be/activity",
+    "object": {
+        "attributedTo": "https://puckipedia.com/",
+        "cc": "https://puckipedia.com/followers",
+        "content": "<p>henlo from my Psion netBook</p><p>message sent from my Psion netBook</p>",
+        "id": "https://puckipedia.com/ae4ee4e8be",
+        "likes": "https://puckipedia.com/ae4ee4e8be/likes",
+        "replies": "https://puckipedia.com/ae4ee4e8be/replies",
+        "shares": "https://puckipedia.com/ae4ee4e8be/shares",
+        "to": "https://www.w3.org/ns/activitystreams#Public",
+        "type": "Note"
+    },
+    "to": "https://www.w3.org/ns/activitystreams#Public",
+    "type": "Create"
+}
diff --git a/test/support/httpoison_mock.ex b/test/support/httpoison_mock.ex
index a52d44ed6..527c2e1f7 100644
--- a/test/support/httpoison_mock.ex
+++ b/test/support/httpoison_mock.ex
@@ -3,6 +3,14 @@ defmodule HTTPoisonMock do
 
   def get(url, body \\ [], headers \\ [])
 
+  def get("https://puckipedia.com/", [Accept: "application/activity+json"], _) do
+    {:ok,
+     %Response{
+       status_code: 200,
+       body: File.read!("test/fixtures/httpoison_mock/puckipedia.com.json")
+     }}
+  end
+
   def get(
         "https://gerzilla.de/.well-known/webfinger?resource=acct:kaniini@gerzilla.de",
         [Accept: "application/xrd+xml,application/jrd+json"],
diff --git a/test/web/activity_pub/transmogrifier_test.exs b/test/web/activity_pub/transmogrifier_test.exs
index 838ae169d..e455da39f 100644
--- a/test/web/activity_pub/transmogrifier_test.exs
+++ b/test/web/activity_pub/transmogrifier_test.exs
@@ -112,6 +112,15 @@ defmodule Pleroma.Web.ActivityPub.TransmogrifierTest do
                "<p><span class=\"h-card\"><a href=\"http://localtesting.pleroma.lol/users/lain\" class=\"u-url mention\">@<span>lain</span></a></span></p>"
     end
 
+    test "it works for incoming notices with to/cc not being an array (kroeg)" do
+      data = File.read!("test/fixtures/kroeg-post-activity.json") |> Poison.decode!()
+
+      {:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)
+
+      assert data["object"]["content"] ==
+               "<p>henlo from my Psion netBook</p><p>message sent from my Psion netBook</p>"
+    end
+
     test "it works for incoming follow requests" do
       user = insert(:user)