diff --git a/lib/appbase/widgets/Label.cpp b/lib/appbase/widgets/Label.cpp
index 189b37a1..084307ed 100644
--- a/lib/appbase/widgets/Label.cpp
+++ b/lib/appbase/widgets/Label.cpp
@@ -83,12 +83,20 @@ QSize Label::minimumSizeHint() const
 void Label::paintEvent(QPaintEvent *)
 {
     QPainter painter(this);
+
+    qreal deviceDpi =
+#ifdef Q_OS_WIN
+        this->devicePixelRatioF();
+#else
+        1.0;
+#endif
+
     QFontMetrics metrics = getFonts()->getFontMetrics(
         this->getFontStyle(),
-        this->scale() * 96.f / this->logicalDpiX() * this->devicePixelRatioF());
+        this->scale() * 96.f / this->logicalDpiX() * deviceDpi);
     painter.setFont(getFonts()->getFont(
-        this->getFontStyle(), this->scale() * 96.f / this->logicalDpiX() *
-                                  this->devicePixelRatioF()));
+        this->getFontStyle(),
+        this->scale() * 96.f / this->logicalDpiX() * deviceDpi));
 
     int offset = this->getOffset();
 
diff --git a/src/.clang-format b/src/.clang-format
index 64970a15..0ef59b1f 100644
--- a/src/.clang-format
+++ b/src/.clang-format
@@ -9,7 +9,6 @@ AlwaysBreakAfterDefinitionReturnType: false
 AlwaysBreakBeforeMultilineStrings: false
 BasedOnStyle: Google
 BraceWrapping: {
-    AfterCaseLabel: 'false'
     AfterClass: 'true'
     AfterControlStatement: 'true'
     AfterFunction: 'true'
diff --git a/src/widgets/helper/NotebookTab.cpp b/src/widgets/helper/NotebookTab.cpp
index faaa1d6b..2ae6aedb 100644
--- a/src/widgets/helper/NotebookTab.cpp
+++ b/src/widgets/helper/NotebookTab.cpp
@@ -22,6 +22,16 @@
 #include <boost/bind.hpp>
 
 namespace chatterino {
+namespace {
+    qreal deviceDpi(QWidget *widget)
+    {
+#ifdef Q_OS_WIN
+        return widget->devicePixelRatioF();
+#else
+        return 1.0;
+#endif
+    }
+}  // namespace
 
 NotebookTab::NotebookTab(Notebook *notebook)
     : Button(notebook)
@@ -83,11 +93,10 @@ void NotebookTab::themeChangedEvent()
 void NotebookTab::updateSize()
 {
     float scale = this->scale();
-
     int width;
+
     QFontMetrics metrics = getApp()->fonts->getFontMetrics(
-        FontStyle::UiTabs,
-        float(qreal(this->scale()) * this->devicePixelRatioF()));
+        FontStyle::UiTabs, float(qreal(this->scale()) * deviceDpi(this)));
 
     if (this->hasXButton())
     {
@@ -276,10 +285,10 @@ void NotebookTab::paintEvent(QPaintEvent *)
 
     painter.setFont(getApp()->fonts->getFont(
         FontStyle::UiTabs,
-        scale * 96.f / this->logicalDpiX() * this->devicePixelRatioF()));
+        scale * 96.f / this->logicalDpiX() * deviceDpi(this)));
     QFontMetrics metrics = app->fonts->getFontMetrics(
         FontStyle::UiTabs,
-        scale * 96.f / this->logicalDpiX() * this->devicePixelRatioF());
+        scale * 96.f / this->logicalDpiX() * deviceDpi(this));
 
     int height = int(scale * NOTEBOOK_TAB_HEIGHT);
 
@@ -299,12 +308,12 @@ void NotebookTab::paintEvent(QPaintEvent *)
     bool windowFocused = this->window() == QApplication::activeWindow();
 
     QBrush tabBackground = /*this->mouseOver_ ? colors.backgrounds.hover
-                                            :*/
+                                 :*/
         (windowFocused ? colors.backgrounds.regular
                        : colors.backgrounds.unfocused);
 
     // fill the tab background
-    auto bgRect = rect();
+    auto bgRect = this->rect();
     bgRect.setTop(ceil((this->selected_ ? 0.f : 1.f) * scale));
 
     painter.fillRect(bgRect, tabBackground);