diff --git a/ui/style/style_core.cpp b/ui/style/style_core.cpp
index 4232be6..15a34f4 100644
--- a/ui/style/style_core.cpp
+++ b/ui/style/style_core.cpp
@@ -20,7 +20,7 @@
 namespace style {
 namespace internal {
 
-bool GetUseSystemFont();
+extern bool UseSystemFont;
 
 namespace {
 
@@ -32,7 +32,6 @@ auto PaletteChanges = rpl::event_stream<>();
 auto ShortAnimationRunning = rpl::variable<bool>(false);
 auto RunningShortAnimations = 0;
 auto ResolvedMonospaceFont = style::font();
-QString CustomMonospaceFont;
 
 std::vector<internal::ModuleBase*> &StyleModules() {
 	static auto result = std::vector<internal::ModuleBase*>();
@@ -58,7 +57,7 @@ void ResolveMonospaceFont() {
 	if (!CustomMonospaceFont.isEmpty()) {
 		tryFont(CustomMonospaceFont);
 	}
-	if (!GetUseSystemFont()) {
+	if (!UseSystemFont) {
 		tryFont("Consolas");
 		tryFont("Liberation Mono");
 		tryFont("Menlo");
@@ -74,9 +73,7 @@ void ResolveMonospaceFont() {
 
 } // namespace
 
-void SetMonospaceFont(const QString &familyName) {
-	CustomMonospaceFont = familyName;
-}
+QString CustomMonospaceFont;
 
 void registerModule(ModuleBase *module) {
 	StyleModules().push_back(module);
diff --git a/ui/style/style_core.h b/ui/style/style_core.h
index ce6ced5..9ed088e 100644
--- a/ui/style/style_core.h
+++ b/ui/style/style_core.h
@@ -15,6 +15,8 @@
 namespace style {
 namespace internal {
 
+extern QString CustomMonospaceFont;
+
 // Objects of derived classes are created in global scope.
 // They call [un]registerModule() in [de|con]structor.
 class ModuleBase {
@@ -25,8 +27,6 @@ public:
 
 };
 
-void SetMonospaceFont(const QString &familyName);
-
 void registerModule(ModuleBase *module);
 
 [[nodiscard]] QColor EnsureContrast(const QColor &over, const QColor &under);
diff --git a/ui/style/style_core_font.cpp b/ui/style/style_core_font.cpp
index 2b565d2..192ff85 100644
--- a/ui/style/style_core_font.cpp
+++ b/ui/style/style_core_font.cpp
@@ -167,38 +167,14 @@ QString FontTypeWindowsFallback[FontTypesCount] = {
 bool Started = false;
 QString Overrides[FontTypesCount];
 
+} // namespace
+
 QString CustomMainFont;
 QString CustomSemiboldFont;
 bool CustomSemiboldIsBold = false;
 bool UseSystemFont = false;
 bool UseOriginalMetrics = false;
 
-} // namespace
-
-bool GetUseSystemFont() {
-	return UseSystemFont;
-}
-
-void SetMainFont(const QString &familyName) {
-	CustomMainFont = familyName;
-}
-
-void SetSemiboldFont(const QString &familyName) {
-	CustomSemiboldFont = familyName;
-}
-
-void SetSemiboldIsBold(bool isBold) {
-	CustomSemiboldIsBold = isBold;
-}
-
-void SetUseSystemFont(bool isSystemFont) {
-	UseSystemFont = isSystemFont;
-}
-
-void SetUseOriginalMetrics(bool isOriginal) {
-	UseOriginalMetrics = isOriginal;
-}
-
 void StartFonts() {
 	if (Started) {
 		return;
diff --git a/ui/style/style_core_font.h b/ui/style/style_core_font.h
index f936290..c988510 100644
--- a/ui/style/style_core_font.h
+++ b/ui/style/style_core_font.h
@@ -14,11 +14,11 @@
 namespace style {
 namespace internal {
 
-void SetMainFont(const QString &familyName);
-void SetSemiboldFont(const QString &familyName);
-void SetSemiboldIsBold(bool isBold);
-void SetUseSystemFont(bool isSystemFont);
-void SetUseOriginalMetrics(bool isOriginal);
+extern QString CustomMainFont;
+extern QString CustomSemiboldFont;
+extern bool CustomSemiboldIsBold;
+extern bool UseSystemFont;
+extern bool UseOriginalMetrics;
 
 void StartFonts();
 [[nodiscard]] QString GetFontOverride(const QString &familyName, int32 flags = 0);