diff --git a/data.c b/data.c
index e038f81..67f5751 100644
--- a/data.c
+++ b/data.c
@@ -827,7 +827,7 @@ int object_unadmire(const char *id, const char *actor, int like)
 
     status = index_del(fn, actor);
 
-    srv_debug(1,
+    srv_debug(0,
         xs_fmt("object_unadmire (%s) %s %s %d", like ? "Like" : "Announce", actor, fn, status));
 
     return status;
diff --git a/mastoapi.c b/mastoapi.c
index 3d0a939..72d9579 100644
--- a/mastoapi.c
+++ b/mastoapi.c
@@ -1670,7 +1670,11 @@ int mastoapi_post_handler(const xs_dict *req, const char *q_path,
                     }
                     else
                     if (strcmp(op, "unfavourite") == 0) {
-                        /* snac does not support Undo+Like */
+                        /* partial support: as the original Like message
+                           is not stored anywhere here, it's not possible
+                           to send an Undo + Like; the only thing done here
+                           is to delete the actor from the list of likes */
+                        object_unadmire(id, snac.actor, 1);
                     }
                     else
                     if (strcmp(op, "reblog") == 0) {
@@ -1685,7 +1689,8 @@ int mastoapi_post_handler(const xs_dict *req, const char *q_path,
                     }
                     else
                     if (strcmp(op, "unreblog") == 0) {
-                        /* snac does not support Undo+Announce */
+                        /* partial support: see comment in 'unfavourite' */
+                        object_unadmire(id, snac.actor, 0);
                     }
                     else
                     if (strcmp(op, "bookmark") == 0) {
diff --git a/snac.h b/snac.h
index 10e8c4c..a162618 100644
--- a/snac.h
+++ b/snac.h
@@ -83,6 +83,7 @@ int object_del_if_unref(const char *id);
 double object_ctime_by_md5(const char *md5);
 double object_ctime(const char *id);
 int object_admire(const char *id, const char *actor, int like);
+int object_unadmire(const char *id, const char *actor, int like);
 
 int object_likes_len(const char *id);
 int object_announces_len(const char *id);