diff --git a/src/qml/ControlsBar.qml b/src/qml/ControlsBar.qml
index 0dfe868..498e431 100644
--- a/src/qml/ControlsBar.qml
+++ b/src/qml/ControlsBar.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import QtQuick.Dialogs 1.3
 import QtQuick.Layouts 1.11
 import QtQuick.Window 2.11
diff --git a/src/qml/CustomMenu.qml b/src/qml/CustomMenu.qml
index c0b8f84..bc8a26a 100644
--- a/src/qml/CustomMenu.qml
+++ b/src/qml/CustomMenu.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 
 Menu {
     width: 300
diff --git a/src/qml/Dialogs/PlaylistDialog.qml b/src/qml/Dialogs/PlaylistDialog.qml
index bb9b15c..b1bb339 100644
--- a/src/qml/Dialogs/PlaylistDialog.qml
+++ b/src/qml/Dialogs/PlaylistDialog.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import QtQuick.Dialogs 1.3
 import QtQuick.Window 2.11
 import Qt.labs.settings 1.0
diff --git a/src/qml/Items/AudioDeviceItem.qml b/src/qml/Items/AudioDeviceItem.qml
index 738943e..b2f5f63 100644
--- a/src/qml/Items/AudioDeviceItem.qml
+++ b/src/qml/Items/AudioDeviceItem.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import Qt.labs.settings 1.0
 import player 1.0
 
diff --git a/src/qml/Items/ChapterMarkerItem.qml b/src/qml/Items/ChapterMarkerItem.qml
index f4ee92c..5dd91ee 100644
--- a/src/qml/Items/ChapterMarkerItem.qml
+++ b/src/qml/Items/ChapterMarkerItem.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import Qt.labs.settings 1.0
 import player 1.0
 
diff --git a/src/qml/Items/CustomMenuItem.qml b/src/qml/Items/CustomMenuItem.qml
index 039e827..9cccd6c 100644
--- a/src/qml/Items/CustomMenuItem.qml
+++ b/src/qml/Items/CustomMenuItem.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import Qt.labs.settings 1.0
 
 MenuItem {
diff --git a/src/qml/Items/ThumbnailProcess.qml b/src/qml/Items/ThumbnailProcess.qml
index 2d059fb..e0d4ba3 100644
--- a/src/qml/Items/ThumbnailProcess.qml
+++ b/src/qml/Items/ThumbnailProcess.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import QtQuick.Dialogs 1.3
 import QtQuick.Window 2.11
 import Qt.labs.settings 1.0
diff --git a/src/qml/Items/TitleProcess.qml b/src/qml/Items/TitleProcess.qml
index 3838172..aeae408 100644
--- a/src/qml/Items/TitleProcess.qml
+++ b/src/qml/Items/TitleProcess.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import QtQuick.Dialogs 1.3
 import QtQuick.Window 2.11
 import Qt.labs.settings 1.0
diff --git a/src/qml/Items/TrackItem.qml b/src/qml/Items/TrackItem.qml
index ab19f4c..81e0017 100644
--- a/src/qml/Items/TrackItem.qml
+++ b/src/qml/Items/TrackItem.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import Qt.labs.settings 1.0
 import player 1.0
 
diff --git a/src/qml/MainMenu.qml b/src/qml/MainMenu.qml
index 7c47e8f..65a0225 100644
--- a/src/qml/MainMenu.qml
+++ b/src/qml/MainMenu.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import QtQuick.Dialogs 1.3
 import QtQuick.Window 2.11
 import Qt.labs.settings 1.0
diff --git a/src/qml/NiconicoButtonLayout.qml b/src/qml/NiconicoButtonLayout.qml
index 09f5f29..9e7724c 100644
--- a/src/qml/NiconicoButtonLayout.qml
+++ b/src/qml/NiconicoButtonLayout.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import QtQuick.Dialogs 1.3
 import QtQuick.Layouts 1.11
 import QtQuick.Window 2.11
diff --git a/src/qml/RoosterTeethButtonLayout.qml b/src/qml/RoosterTeethButtonLayout.qml
index d4d55b7..44f9a53 100644
--- a/src/qml/RoosterTeethButtonLayout.qml
+++ b/src/qml/RoosterTeethButtonLayout.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import QtQuick.Dialogs 1.3
 import QtQuick.Layouts 1.11
 import QtQuick.Window 2.11
diff --git a/src/qml/UIComponents/BackwardButton.qml b/src/qml/UIComponents/BackwardButton.qml
index e252f0b..6fefc0a 100644
--- a/src/qml/UIComponents/BackwardButton.qml
+++ b/src/qml/UIComponents/BackwardButton.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import QtQuick.Dialogs 1.3
 import QtQuick.Layouts 1.11
 import QtQuick.Window 2.11
diff --git a/src/qml/UIComponents/ForwardButton.qml b/src/qml/UIComponents/ForwardButton.qml
index 9c094ba..7bd2bff 100644
--- a/src/qml/UIComponents/ForwardButton.qml
+++ b/src/qml/UIComponents/ForwardButton.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import QtQuick.Dialogs 1.3
 import QtQuick.Layouts 1.11
 import QtQuick.Window 2.11
diff --git a/src/qml/UIComponents/FullscreenButton.qml b/src/qml/UIComponents/FullscreenButton.qml
index 8922ef0..27e6fe3 100644
--- a/src/qml/UIComponents/FullscreenButton.qml
+++ b/src/qml/UIComponents/FullscreenButton.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import QtQuick.Dialogs 1.3
 import QtQuick.Layouts 1.11
 import QtQuick.Window 2.11
diff --git a/src/qml/UIComponents/PlayPauseButton.qml b/src/qml/UIComponents/PlayPauseButton.qml
index 2f9c599..fd6d372 100644
--- a/src/qml/UIComponents/PlayPauseButton.qml
+++ b/src/qml/UIComponents/PlayPauseButton.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import QtQuick.Dialogs 1.3
 import QtQuick.Layouts 1.11
 import QtQuick.Window 2.11
diff --git a/src/qml/UIComponents/PlaylistNextButton.qml b/src/qml/UIComponents/PlaylistNextButton.qml
index 57af10b..ff0c63f 100644
--- a/src/qml/UIComponents/PlaylistNextButton.qml
+++ b/src/qml/UIComponents/PlaylistNextButton.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import QtQuick.Dialogs 1.3
 import QtQuick.Layouts 1.11
 import QtQuick.Window 2.11
diff --git a/src/qml/UIComponents/PlaylistPrevButton.qml b/src/qml/UIComponents/PlaylistPrevButton.qml
index f6a034b..33cf8d9 100644
--- a/src/qml/UIComponents/PlaylistPrevButton.qml
+++ b/src/qml/UIComponents/PlaylistPrevButton.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import QtQuick.Dialogs 1.3
 import QtQuick.Layouts 1.11
 import QtQuick.Window 2.11
diff --git a/src/qml/UIComponents/SettingsButton.qml b/src/qml/UIComponents/SettingsButton.qml
index 1f15fae..1611ec4 100644
--- a/src/qml/UIComponents/SettingsButton.qml
+++ b/src/qml/UIComponents/SettingsButton.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import QtQuick.Dialogs 1.3
 import QtQuick.Layouts 1.11
 import QtQuick.Window 2.11
diff --git a/src/qml/UIComponents/SpeedText.qml b/src/qml/UIComponents/SpeedText.qml
index 782fa8e..f589d2f 100644
--- a/src/qml/UIComponents/SpeedText.qml
+++ b/src/qml/UIComponents/SpeedText.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import QtQuick.Dialogs 1.3
 import QtQuick.Layouts 1.11
 import QtQuick.Window 2.11
diff --git a/src/qml/UIComponents/TimeLabel.qml b/src/qml/UIComponents/TimeLabel.qml
index 8dd4ebc..e4bce6b 100644
--- a/src/qml/UIComponents/TimeLabel.qml
+++ b/src/qml/UIComponents/TimeLabel.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import QtQuick.Dialogs 1.3
 import QtQuick.Layouts 1.11
 import QtQuick.Window 2.11
diff --git a/src/qml/UIComponents/VerticalVolume.qml b/src/qml/UIComponents/VerticalVolume.qml
index 8e53f54..51905cf 100644
--- a/src/qml/UIComponents/VerticalVolume.qml
+++ b/src/qml/UIComponents/VerticalVolume.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import QtQuick.Dialogs 1.3
 import QtQuick.Layouts 1.11
 import QtQuick.Window 2.11
diff --git a/src/qml/UIComponents/VideoProgress.qml b/src/qml/UIComponents/VideoProgress.qml
index 81c30e8..3755742 100644
--- a/src/qml/UIComponents/VideoProgress.qml
+++ b/src/qml/UIComponents/VideoProgress.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import QtQuick.Dialogs 1.3
 import QtQuick.Layouts 1.11
 import QtQuick.Window 2.11
diff --git a/src/qml/UIComponents/VolumeButton.qml b/src/qml/UIComponents/VolumeButton.qml
index dfeff68..af634fc 100644
--- a/src/qml/UIComponents/VolumeButton.qml
+++ b/src/qml/UIComponents/VolumeButton.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import QtQuick.Dialogs 1.3
 import QtQuick.Layouts 1.11
 import QtQuick.Window 2.11
diff --git a/src/qml/UIComponents/VolumeSlider.qml b/src/qml/UIComponents/VolumeSlider.qml
index 4c086de..7c74cc0 100644
--- a/src/qml/UIComponents/VolumeSlider.qml
+++ b/src/qml/UIComponents/VolumeSlider.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import QtQuick.Dialogs 1.3
 import QtQuick.Layouts 1.11
 import QtQuick.Window 2.11
diff --git a/src/qml/YouTubeButtonLayout.qml b/src/qml/YouTubeButtonLayout.qml
index f1c69ed..5771719 100644
--- a/src/qml/YouTubeButtonLayout.qml
+++ b/src/qml/YouTubeButtonLayout.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import QtQuick.Dialogs 1.3
 import QtQuick.Layouts 1.11
 import QtQuick.Window 2.11
diff --git a/src/qml/main.qml b/src/qml/main.qml
index ca24d55..2fabafc 100644
--- a/src/qml/main.qml
+++ b/src/qml/main.qml
@@ -1,5 +1,5 @@
 import QtQuick 2.0
-import QtQuick.Controls 2.4
+import QtQuick.Controls 2.3
 import QtQuick.Dialogs 1.3
 import QtQuick.Layouts 1.11
 import QtQuick.Window 2.11