diff --git a/src/common/sizer.cpp b/src/common/sizer.cpp
index 36849b8cd1..bd513f73ef 100644
--- a/src/common/sizer.cpp
+++ b/src/common/sizer.cpp
@@ -1232,8 +1232,8 @@ static void GetStaticBoxBorders(wxStaticBox *box,
         *borderTop = 5;
     else
 #endif // __WXGTK__
-        *borderTop = 15;
-    (void)box;
+        *borderTop = box->GetCharHeight();
+
     *borderOther = 5;
 }