diff --git a/src/dusted/undo_stack.py b/src/dusted/undo_stack.py
index e1e9d44..393d82f 100644
--- a/src/dusted/undo_stack.py
+++ b/src/dusted/undo_stack.py
@@ -62,6 +62,9 @@ def execute(self, name: str) -> Generator[None, None, None]:
         yield
         after = self._snapshot()
 
+        if before == after:
+            return
+
         del self._stack[self._index :]
         if self._unmodified_index > self._index:
             self._unmodified_index = -1