diff --git a/cvpcb/class_footprints_listbox.cpp b/cvpcb/class_footprints_listbox.cpp
index 605ed6f944..a80c69c115 100644
--- a/cvpcb/class_footprints_listbox.cpp
+++ b/cvpcb/class_footprints_listbox.cpp
@@ -119,7 +119,7 @@ void FOOTPRINTS_LISTBOX::SetFootprintFullList( FOOTPRINT_LIST& list )
     for( unsigned ii = 0; ii < list.GetCount(); ii++ )
     {
         FOOTPRINT_INFO & footprint = list.GetItem(ii);
-        msg.Printf( wxT( "%3d %s" ), (int) m_FullFootprintList.GetCount() + 1,
+        msg.Printf( wxT( "%3zu %s" ), m_FullFootprintList.GetCount() + 1,
                    GetChars(footprint.m_Module) );
         m_FullFootprintList.Add( msg );
     }
@@ -154,7 +154,7 @@ void FOOTPRINTS_LISTBOX::SetFootprintFilteredList( COMPONENT_INFO* Component,
             candidate = Component->m_FootprintFilter[jj].Upper();
             if( !module.Matches( candidate ) )
                 continue;
-            msg.Printf( wxT( "%3d %s" ), m_FilteredFootprintList.GetCount() + 1,
+            msg.Printf( wxT( "%3zu %s" ), m_FilteredFootprintList.GetCount() + 1,
                        footprint.m_Module.GetData() );
             m_FilteredFootprintList.Add( msg );
             hasItem = true;
@@ -186,7 +186,7 @@ void FOOTPRINTS_LISTBOX::SetFootprintFilteredByPinCount( COMPONENT_INFO* Compone
 
         if( Component->m_pinCount == footprint.m_padCount )
         {
-            msg.Printf( wxT( "%3d %s" ), m_FilteredFootprintList.GetCount() + 1,
+            msg.Printf( wxT( "%3zu %s" ), m_FilteredFootprintList.GetCount() + 1,
                      footprint.m_Module.GetData() );
             m_FilteredFootprintList.Add( msg );
             hasItem = true;
diff --git a/eeschema/netlist.cpp b/eeschema/netlist.cpp
index 17437b1138..9ca38ee584 100644
--- a/eeschema/netlist.cpp
+++ b/eeschema/netlist.cpp
@@ -146,11 +146,10 @@ void SCH_EDIT_FRAME::BuildNetListBase()
     if( g_NetObjectslist.size() == 0 )
         return;  // no objects
 
-    /* Here wx gives its best... depending on the build option size can
-       be unsigned int or unsigned long (probably even size_t, but it doesn't
-       support the %z specifier). So the cast is for platform compability */
-    activity += wxString::Format( _( " net count = %lu" ), 
-            (unsigned long)( g_NetObjectslist.size() ) );
+    /* The new %zu specification is needed to properly format a size_t
+     * value (returned by size(), here) */
+    activity += wxString::Format( _( " net count = %zu" ), 
+                g_NetObjectslist.size() );
     SetStatusText( activity );
 
     /* Sort objects by Sheet */