diff --git a/posts.py b/posts.py
index 4376684d9..c887e149e 100644
--- a/posts.py
+++ b/posts.py
@@ -837,7 +837,7 @@ def _createPostS2S(baseDir: str, nickname: str, domain: str, port: int,
                    published: str, newPostId: str, postContext: {},
                    toRecipients: [], toCC: [], inReplyTo: str,
                    sensitive: bool, commentsEnabled: bool,
-                   tags: {}, attachImageFilename: str,
+                   tags: [], attachImageFilename: str,
                    mediaType: str, imageDescription: str, city: str,
                    postObjectType: str, summary: str,
                    inReplyToAtomUri: str) -> {}:
@@ -905,7 +905,7 @@ def _createPostC2S(baseDir: str, nickname: str, domain: str, port: int,
                    published: str, newPostId: str, postContext: {},
                    toRecipients: [], toCC: [], inReplyTo: str,
                    sensitive: bool, commentsEnabled: bool,
-                   tags: {}, attachImageFilename: str,
+                   tags: [], attachImageFilename: str,
                    mediaType: str, imageDescription: str, city: str,
                    postObjectType: str, summary: str,
                    inReplyToAtomUri: str) -> {}: