diff --git a/Telegram/build/prepare/prepare.py b/Telegram/build/prepare/prepare.py
index c2f05aa426..a859afa93d 100644
--- a/Telegram/build/prepare/prepare.py
+++ b/Telegram/build/prepare/prepare.py
@@ -1557,7 +1557,6 @@ release:
 depends:patches/qtbase_""" + qt + """/*.patch
     cd qtbase
 win:
-    git revert --no-edit 6ad56dce34
     setlocal enabledelayedexpansion
     for /r %%i in (..\\..\\patches\\qtbase_%QT%\\*) do (
         git apply %%i -v
diff --git a/Telegram/build/qt_version.py b/Telegram/build/qt_version.py
index 3257df851e..e551364ce3 100644
--- a/Telegram/build/qt_version.py
+++ b/Telegram/build/qt_version.py
@@ -9,5 +9,5 @@ def resolve(arch):
             os.environ['QT'] = '6.9.1'
         else:
             print('Choosing Qt 5.')
-            os.environ['QT'] = '5.15.15'
+            os.environ['QT'] = '5.15.17'
     return True