diff --git a/ui/style/style_core_font.cpp b/ui/style/style_core_font.cpp
index 55fb7cc..4ca722c 100644
--- a/ui/style/style_core_font.cpp
+++ b/ui/style/style_core_font.cpp
@@ -17,7 +17,6 @@
 #include <QtGui/QFontInfo>
 #include <QtGui/QFontDatabase>
 #include <QtWidgets/QApplication>
-#include <private/qfontengine_p.h>
 
 void style_InitFontsResource() {
 #ifdef Q_OS_MAC // Use resources from the .app bundle on macOS.
@@ -293,12 +292,6 @@ int registerFontFamily(const QString &family) {
 	return result;
 }
 
-int CeilTextWidth(const QFont &font, const QString &text) {
-	return text.isEmpty()
-		? 0
-		: QStackTextEngine(text, font).width(0, text.size()).ceil().toInt();
-}
-
 FontData::FontData(int size, uint32 flags, int family, Font *other)
 : f(ResolveFont(family ? fontFamilies[family] : QString(), flags, size))
 , _m(f)
diff --git a/ui/style/style_core_font.h b/ui/style/style_core_font.h
index 152357b..898fd75 100644
--- a/ui/style/style_core_font.h
+++ b/ui/style/style_core_font.h
@@ -68,12 +68,10 @@ enum FontFlags {
 	FontDifferentFlags = 0x40,
 };
 
-[[nodiscard]] int CeilTextWidth(const QFont &font, const QString &text);
-
 class FontData {
 public:
 	[[nodiscard]] int width(const QString &text) const {
-		return CeilTextWidth(f, text);
+		return int(std::ceil(_m.horizontalAdvance(text)));
 	}
 	[[nodiscard]] int width(const QString &text, int from, int to) const {
 		return width(text.mid(from, to));