diff --git a/mne/annotations.py b/mne/annotations.py
index 4ca44d8878b..9f9a3b11fbf 100644
--- a/mne/annotations.py
+++ b/mne/annotations.py
@@ -1738,7 +1738,14 @@ def _combine_annotations(
     duration = np.concatenate([one.duration, two.duration])
     description = np.concatenate([one.description, two.description])
     ch_names = np.concatenate([one.ch_names, two.ch_names])
-    return Annotations(onset, duration, description, one.orig_time, ch_names)
+
+    # --- BİZİM EKLEDİĞİMİZ SATIR (Extras listelerini birleştir): ---
+    extras = list(one.extras) + list(two.extras)
+
+    # --- EN SONA "extras=extras" PARAMETRESİNİ EKLEDİK: ---
+    return Annotations(
+        onset, duration, description, one.orig_time, ch_names, extras=extras
+    )
 
 
 def _handle_meas_date(meas_date):