diff --git a/mozilla/mailnews/mime/cthandlers/glue/mimexpcom.cpp b/mozilla/mailnews/mime/cthandlers/glue/mimexpcom.cpp
index f60ad6dfeb0..f493d67eb1c 100644
--- a/mozilla/mailnews/mime/cthandlers/glue/mimexpcom.cpp
+++ b/mozilla/mailnews/mime/cthandlers/glue/mimexpcom.cpp
@@ -126,7 +126,7 @@ COM_MimeObject_write(void *mimeObject, char *data, PRInt32 length,
                                                     (void **) getter_AddRefs(objAccess)); 
   if (NS_SUCCEEDED(res) && objAccess)
   { 
-    if (objAccess->MimeObjectWrite(mimeObject, data, length, user_visible_p) == NS_OK)
+    if (NS_SUCCEEDED(objAccess->MimeObjectWrite(mimeObject, data, length, user_visible_p)))
       rc = length;
     else
       rc = -1;
diff --git a/mozilla/mailnews/mime/cthandlers/vcard/mimexpcom.cpp b/mozilla/mailnews/mime/cthandlers/vcard/mimexpcom.cpp
index f60ad6dfeb0..f493d67eb1c 100644
--- a/mozilla/mailnews/mime/cthandlers/vcard/mimexpcom.cpp
+++ b/mozilla/mailnews/mime/cthandlers/vcard/mimexpcom.cpp
@@ -126,7 +126,7 @@ COM_MimeObject_write(void *mimeObject, char *data, PRInt32 length,
                                                     (void **) getter_AddRefs(objAccess)); 
   if (NS_SUCCEEDED(res) && objAccess)
   { 
-    if (objAccess->MimeObjectWrite(mimeObject, data, length, user_visible_p) == NS_OK)
+    if (NS_SUCCEEDED(objAccess->MimeObjectWrite(mimeObject, data, length, user_visible_p)))
       rc = length;
     else
       rc = -1;