diff --git a/pcbnew/router/pns_debug_decorator.h b/pcbnew/router/pns_debug_decorator.h
new file mode 100644
index 0000000000..4cec4c55b2
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+++ b/pcbnew/router/pns_debug_decorator.h
@@ -0,0 +1,46 @@
+/*
+ * KiRouter - a push-and-(sometimes-)shove PCB router
+ *
+ * Copyright (C) 2013-2016 CERN
+ * Author: Christian Gagneraud <chgans@gna.org>
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __PNS_DEBUG_DECORATOR_H
+#define __PNS_DEBUG_DECORATOR_H
+
+#include <math/vector2d.h>
+#include <math/box2.h>
+#include <geometry/seg.h>
+#include <geometry/shape_line_chain.h>
+
+class PNS_DEBUG_DECORATOR
+{
+public:
+    PNS_DEBUG_DECORATOR()
+    {}
+
+    virtual ~PNS_DEBUG_DECORATOR()
+    {}
+
+    virtual void AddPoint( VECTOR2I aP, int aColor ) {};
+    virtual void AddLine( const SHAPE_LINE_CHAIN& aLine, int aType = 0, int aWidth = 0 ) {};
+    virtual void AddSegment( SEG aS, int aColor ) {};
+    virtual void AddBox( BOX2I aB, int aColor ) {};
+    virtual void AddDirections( VECTOR2D aP, int aMask, int aColor ) {};
+    virtual void Clear() {};
+};
+
+#endif