diff --git a/oletools/oleid.py b/oletools/oleid.py
index 29c4eec..61ce3c2 100644
--- a/oletools/oleid.py
+++ b/oletools/oleid.py
@@ -450,6 +450,10 @@ class OleID(object):
             vba_indicator.risk = RISK.ERROR
             vba_indicator.value = 'Error'
             vba_indicator.description = 'Error while checking VBA macros: %s' % str(e)
+        finally:
+            if vba_parser is not None:
+                vba_parser.close()
+            vba_parser = None
         # Check XLM macros only for Excel file types:
         if self.ftg.is_excel():
             # TODO: for now XLM detection only works for files on disk... So we need to reload VBA_Parser from the filename
@@ -465,6 +469,9 @@ class OleID(object):
                     xlm_indicator.risk = RISK.ERROR
                     xlm_indicator.value = 'Error'
                     xlm_indicator.description = 'Error while checking XLM macros: %s' % str(e)
+                finally:
+                    if vba_parser is not None:
+                        vba_parser.close()
             else:
                 xlm_indicator.risk = RISK.UNKNOWN
                 xlm_indicator.value = 'Unknown'