diff --git a/api/s8_tags.py b/api/s8_tags.py
index 8ae4a5d..18fc1cd 100644
--- a/api/s8_tags.py
+++ b/api/s8_tags.py
@@ -76,6 +76,8 @@ def set_tag_cmd(name: str, cs: ChangeSet) -> DbChangeSet:
 
 
 def set_tag(name: str, cs: ChangeSet) -> ChangeSet:
+    if 't_type' not in cs.operations[0] or 'id' not in cs.operations[0] or 'tag' not in cs.operations[0]:
+        return ChangeSet()
     return execute_command(name, set_tag_cmd(name, cs))