diff --git a/src/lasp/lasp_record.py b/src/lasp/lasp_record.py
index 627c1ef..243a687 100644
--- a/src/lasp/lasp_record.py
+++ b/src/lasp/lasp_record.py
@@ -218,6 +218,10 @@ class Recording:
             # from StreamMgr.
             self.indh = None
 
+            # Remove handle to dataset otherwise the h5 file is not closed
+            # properly.
+            self.ad = None
+
             try:
                 # Close the recording file
                 self.f.close()