diff --git a/.github/workflows/build-ubuntu-aarch64.yml b/.github/workflows/build-ubuntu-aarch64.yml
index 1b4c8d4b..c06b50ed 100644
--- a/.github/workflows/build-ubuntu-aarch64.yml
+++ b/.github/workflows/build-ubuntu-aarch64.yml
@@ -33,7 +33,7 @@ jobs:
         rm /etc/apt/sources.list
         mv /etc/apt/sources.list{.new,}
         apt update
-        DEBIAN_FRONTEND=noninteractive apt install -y {gcc-10,g++-10,pkg-config}-aarch64-linux-gnu {libsdl2,qtbase5,qtbase5-private-dev,qtmultimedia5,libslirp,libarchive}-dev:arm64 cmake extra-cmake-modules dpkg-dev
+        DEBIAN_FRONTEND=noninteractive apt install -y {gcc-10,g++-10,pkg-config}-aarch64-linux-gnu {libsdl2,qtbase5,qtbase5-private,qtmultimedia5,libslirp,libarchive}-dev:arm64 cmake extra-cmake-modules dpkg-dev
     - name: Configure
       shell: bash
       run: |
diff --git a/src/frontend/qt_sdl/main.cpp b/src/frontend/qt_sdl/main.cpp
index eb6ce4a7..d60108da 100644
--- a/src/frontend/qt_sdl/main.cpp
+++ b/src/frontend/qt_sdl/main.cpp
@@ -1278,11 +1278,11 @@ bool ScreenPanelGL::createContext()
 
 qreal ScreenPanelGL::devicePixelRatioFromScreen() const
 {
-  const QScreen* screen_for_ratio = screen();
-  if (!screen_for_ratio)
+    const QScreen* screen_for_ratio = window()->windowHandle()->screen();
+    if (!screen_for_ratio)
     screen_for_ratio = QGuiApplication::primaryScreen();
 
-  return screen_for_ratio ? screen_for_ratio->devicePixelRatio() : static_cast<qreal>(1);
+    return screen_for_ratio ? screen_for_ratio->devicePixelRatio() : static_cast<qreal>(1);
 }
 
 int ScreenPanelGL::scaledWindowWidth() const