diff --git a/bcc.py b/bcc.py
index dbd6110..32d8290 100644
--- a/bcc.py
+++ b/bcc.py
@@ -2083,12 +2083,17 @@ class MainWindow(QMainWindow):
         if not (0 <= idx < len(self.servers)):
             return
         entry = self.servers[idx]
+        old_name = entry.name
         entry.name = self.editor.current_name()
         entry.data = self.editor.dump_data()
         # The server stays in its section (enable state unchanged), so update
         # its existing row in place rather than re-rendering.
         # An edit invalidates any cached "Test all" result -- the server that
-        # was spawn-tested no longer matches what's on disk once saved.
+        # was spawn-tested no longer matches what's on disk once saved. Pop
+        # both names: the old one (so a rename doesn't leave a stale entry
+        # for whoever takes that name next) and the new one (so we don't
+        # inherit a stale result cached under the name being renamed to).
+        self._health.pop(old_name, None)
         self._health.pop(entry.name, None)
         loc = self._row_of_index.get(idx)
         if loc: