diff --git a/data/web/corefork.telegram.org/methods.html b/data/web/corefork.telegram.org/methods.html
index 1d28aca123..32450be497 100644
--- a/data/web/corefork.telegram.org/methods.html
+++ b/data/web/corefork.telegram.org/methods.html
@@ -395,7 +395,7 @@
 <tbody>
 <tr>
 <td><a href="/method/payments.canPurchasePremium">payments.canPurchasePremium</a></td>
-<td>Checks whether Telegram Premium purchase is possible. Must be called before in-store Premium purchase.</td>
+<td>Checks whether Telegram Premium purchase is possible. Must be called before in-store Premium purchase, official apps only.</td>
 </tr>
 <tr>
 <td><a href="/method/help.getPremiumPromo">help.getPremiumPromo</a></td>