--- a/mailnews/mime/src/mimedrft.cpp
+++ b/mailnews/mime/src/mimedrft.cpp
@@ -1401,17 +1401,17 @@ mime_parse_stream_complete(nsMIMESession
     if (draftInfo && fields && !forward_inline)
     {
       char *parm = 0;
       parm = MimeHeaders_get_parameter(draftInfo, "vcard", NULL, NULL);
       fields->SetAttachVCard(parm && !strcmp(parm, "1"));
       PR_FREEIF(parm);
 
       parm = MimeHeaders_get_parameter(draftInfo, "receipt", NULL, NULL);
-      if (parm && !strcmp(parm, "0"))
+      if (!parm || !strcmp(parm, "0"))
         fields->SetReturnReceipt(false);
       else
       {
         int receiptType = 0;
         fields->SetReturnReceipt(true);
         sscanf(parm, "%d", &receiptType);
         // slight change compared to 4.x; we used to use receipt= to tell
         // whether the draft/template has request for either MDN or DNS or both