diff --git a/pcbnew/CMakeLists.txt b/pcbnew/CMakeLists.txt
index f58e516e84..d11f04b807 100644
--- a/pcbnew/CMakeLists.txt
+++ b/pcbnew/CMakeLists.txt
@@ -286,7 +286,6 @@ set( PCBNEW_CLASS_SRCS
     zones_by_polygon_fill_functions.cpp
     zone_filling_algorithm.cpp
     zones_functions_for_undo_redo.cpp
-    zones_polygons_insulated_copper_islands.cpp
     zones_test_and_combine_areas.cpp
     class_footprint_wizard.cpp
     class_action_plugin.cpp
diff --git a/pcbnew/zones_polygons_insulated_copper_islands.cpp b/pcbnew/zones_polygons_insulated_copper_islands.cpp
deleted file mode 100644
index 39a249caf6..0000000000
--- a/pcbnew/zones_polygons_insulated_copper_islands.cpp
+++ /dev/null
@@ -1,30 +0,0 @@
-/**
- * @file zones_polygons_insulated_copper_islands.cpp
- */
-/*
- * This program source code file is part of KiCad, a free EDA CAD application.
- *
- * Copyright (C) 2012 Jean-Pierre Charras, jean-pierre.charras@ujf-grenoble.fr
- * Copyright (C) 1992-2016 KiCad Developers, see AUTHORS.txt for contributors.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, you may find one here:
- * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
- * or you may search the http://www.gnu.org website for the version 2 license,
- * or you may write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
- */
-
-#include <class_board.h>
-#include <class_zone.h>
-#include <connectivity_data.h>