diff --git a/en/GoogleScholar.md b/en/GoogleScholar.md
index 1a495d6..4a201e1 100644
--- a/en/GoogleScholar.md
+++ b/en/GoogleScholar.md
@@ -17,7 +17,7 @@ To fetch entries from Google Scholar, choose **Search -> Web search**, and th
 Google scholar can block "automated" crawls which generate too much traffic in a short time. JabRef uses a two-step approach to avoid this: JabRef displays at first a preview of the first page of entries returned by the server for each search. You can then choose which entries to fetch. The results are then displayed in the [import inspection window](ImportInspectionDialog).
 In case an error occurs, it is shown in a popup.
 
-However, after too much crawls JabRef --- or more correct: your IP address --- could be blocked. 
-To unblock your IP, do a Google scholar search in your browser. You will be asked to show that you are not a robot (a CAPTCHA challenge).
+However, after too much crawls JabRef --- or more precisely: your IP address or your MAC address --- could be blocked. 
+To unblock your IP, do a Google scholar search in your browser. You will be asked to show that you are not a robot (a CAPTCHA challenge). If no CAPTCHA appears and you have the technical knowledge, you can also change your IP address manually. We have also experienced the case that Google Scholar blocked the MAC address of a user. So, if changing your IP address does not help, you can try changing your MAC address. 
 
 Thus, the Google Scholar fetcher is not the best way to obtain lots of entries at the same time. If you are using Mozilla Firefox, the JabRef Plugin "JabFox" might be an alternative to download the BibTeX data directly from the browser. You can find the PlugIn here: https://addons.mozilla.org/en-US/firefox/addon/jabfox/?src=external-jabrefSite