diff --git a/src/alu3dgrid_serial.h b/src/alu3dgrid_serial.h
index f8435ddccde030ae60f971b3d4f6d8653dd33bd4..da5ad3bbd2c11d5ae505a929eb4629a53c85afc7 100644
--- a/src/alu3dgrid_serial.h
+++ b/src/alu3dgrid_serial.h
@@ -14,10 +14,13 @@ typedef enum {hexa,tetra} grid_t;
 struct GatherScatter;
 typedef GatherScatter GatherScatterType;
 
+
 #include "serial/key.h"
 #include "serial/serialize.h"
 #include "serial/gitter_sti.h"
 
+typedef Gitter::AdaptRestrictProlong AdaptRestrictProlongType;
+
 
 #ifndef _ALU3DGRID_PARALLEL_
 typedef Gitter::helement_STI  HElemType;    // Interface Element