diff --git a/contrib/scripts/sip_to_pjsip/astconfigparser.py b/contrib/scripts/sip_to_pjsip/astconfigparser.py
index 949acdb5ab..ee857e2d6e 100644
--- a/contrib/scripts/sip_to_pjsip/astconfigparser.py
+++ b/contrib/scripts/sip_to_pjsip/astconfigparser.py
@@ -180,7 +180,7 @@ def remove_comment(line, is_comment):
         return "", True
 
     part = line.partition(COMMENT_START)
-    if part[1]:
+    if part[1] and not part[2].startswith('-'):
         # found multi-line comment start check string before
         # it to make sure there wasn't an eol comment in it
         has_comment = part[0].partition(COMMENT)