diff --git a/inbox.py b/inbox.py
index 56f30dbd..00eaea79 100644
--- a/inbox.py
+++ b/inbox.py
@@ -625,6 +625,13 @@ def receiveUndoAnnounce(session,handle: str,baseDir: str, \
         return True
     if debug:
         print('DEBUG: announced/repeated post to be undone found in inbox')
+    with open(postFilename, 'r') as fp:
+        postJson=commentjson.load(fp)
+        if not postJson.get('type'):
+            if postJson['type']!='Announce':
+                if debug:
+                    print("DEBUG: Attenpt to undo something which isn't an announcement")
+                return False        
     os.remove(postFilename)
     return True
 
diff --git a/like.py b/like.py
index dc5fb146..f6719128 100644
--- a/like.py
+++ b/like.py
@@ -21,7 +21,7 @@ def undoLikesCollectionEntry(postFilename: str,objectUrl: str, actor: str,debug:
     with open(postFilename, 'r') as fp:
         postJson=commentjson.load(fp)
         if not postJson.get('type'):
-            if not postJson['type']=='Create':
+            if postJson['type']!='Create':
                 return
             return
         if not postJson.get('object'):