diff --git a/common/widgets/split_button.cpp b/common/widgets/split_button.cpp
index 0dbc38550e..8b85f8f40c 100644
--- a/common/widgets/split_button.cpp
+++ b/common/widgets/split_button.cpp
@@ -38,6 +38,9 @@ SPLIT_BUTTON::SPLIT_BUTTON( wxWindow* aParent, wxWindowID aId, const wxString& a
         wxPanel( aParent, aId, aPos, aSize, wxBORDER_NONE | wxTAB_TRAVERSAL, wxS( "DropDownButton" ) ),
         m_label( aLabel )
 {
+    m_arrowButtonWidth = FromDIP( 20 ); // just a fixed eyeballed constant width
+    m_widthPadding = FromDIP( 10 );
+
     if( aSize == wxDefaultSize )
     {
         wxSize defaultSize = wxButton::GetDefaultSize( aParent );
diff --git a/include/widgets/split_button.h b/include/widgets/split_button.h
index fbe913a65a..27a7d4e06f 100644
--- a/include/widgets/split_button.h
+++ b/include/widgets/split_button.h
@@ -60,8 +60,8 @@ private:
     int       m_stateButton = 0;
     int       m_stateMenu   = 0;
     bool      m_bIsEnable   = true;
-    const int m_arrowButtonWidth = 20;
-    int       m_widthPadding     = 20;
+    int       m_arrowButtonWidth;
+    int       m_widthPadding;
     bool      m_bLButtonDown     = false;
     wxString  m_label;
     wxMenu*   m_pMenu = nullptr;