diff --git a/src/openrct2/interface/widget.c b/src/openrct2/interface/widget.c
index 82d9b9593f..e8eefe0dae 100644
--- a/src/openrct2/interface/widget.c
+++ b/src/openrct2/interface/widget.c
@@ -538,10 +538,12 @@ static void widget_groupbox_draw(rct_drawpixelinfo *dpi, rct_window *w, rct_widg
         if (widget_is_disabled(w, widgetIndex))
             colour |= 0x40;
 
-        format_string(gCommonStringFormatBuffer, sizeof(gCommonStringFormatBuffer), widget->text, gCommonFormatArgs);
-        set_format_arg(0, uintptr_t, gCommonStringFormatBuffer);
-        gfx_draw_string_left(dpi, STR_STRING, gCommonFormatArgs, colour, l, t);
-        textRight = l + gfx_get_string_width(gCommonStringFormatBuffer) + 1;
+        utf8 buffer[512] = { 0 };
+        uint8 args[sizeof(uintptr_t)] = { 0 };
+        format_string(buffer, sizeof(buffer), widget->text, gCommonFormatArgs);
+        set_format_arg_on(args, 0, uintptr_t, buffer);
+        gfx_draw_string_left(dpi, STR_STRING, args, colour, l, t);
+        textRight = l + gfx_get_string_width(buffer) + 1;
     }
 
     // Border