diff --git a/fem/dgspace/orthonormalbase_impl.cc b/fem/dgspace/orthonormalbase_impl.cc
index 7277ea4c7e1ad0e1a690e086d4bc8378b80a94d5..1a8cc4ee537078289b2376bcd6bbd1043f5be585 100644
--- a/fem/dgspace/orthonormalbase_impl.cc
+++ b/fem/dgspace/orthonormalbase_impl.cc
@@ -1,7 +1,7 @@
 // -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 // vi: set et ts=4 sw=2 sts=2:
-#define PMAX2D 4
-#define PMAX3D 4
+#define PMAX2D 5
+#define PMAX3D 5
 
 /****************************************************************************/
 /* functions                                                                                                                    */