diff --git a/include/unotools/fontcfg.hxx b/include/unotools/fontcfg.hxx
index 1fdd40febc93..c13e4a5a4138 100644
--- a/include/unotools/fontcfg.hxx
+++ b/include/unotools/fontcfg.hxx
@@ -85,7 +85,7 @@ enum class ImplFontAttrs : sal_uLong
 };
 namespace o3tl
 {
-    template<> struct typed_flags<ImplFontAttrs> : is_typed_flags<ImplFontAttrs, 0xffffffffUL> {};
+    template<> struct typed_flags<ImplFontAttrs> : is_typed_flags<ImplFontAttrs, 0xffffffff> {};
 }