diff --git a/src/MNH/modd_type_date.f90 b/src/MNH/modd_type_date.f90
index e9717d3217f8f2e43f1f56877fd1b8eb0c24df64..d1b3078e8d20d8ea843d75be1716befc92c7e607 100644
--- a/src/MNH/modd_type_date.f90
+++ b/src/MNH/modd_type_date.f90
@@ -1,4 +1,4 @@
-!MNH_LIC Copyright 1997-2020 CNRS, Meteo-France and Universite Paul Sabatier
+!MNH_LIC Copyright 1997-2022 CNRS, Meteo-France and Universite Paul Sabatier
 !MNH_LIC This is part of the Meso-NH software governed by the CeCILL-C licence
 !MNH_LIC version 1. See LICENSE, CeCILL-C_V1-en.txt and CeCILL-C_V1-fr.txt
 !MNH_LIC for details. version 1.
@@ -47,8 +47,19 @@ type date
   integer :: nday   = 0
 end type date
 !
+#if 0
+!GCC BUG: if an extended type is used in an array for a namelist, the reading fails
+!GCC bug (at least from 5.5 to 12.1, see GCC bug 106065)
 type, extends( date ) :: date_time
   real :: xtime = XNEGUNDEF
 end type date_time
+#else
+type :: date_time
+  integer :: nyear  = NNEGUNDEF
+  integer :: nmonth = 0
+  integer :: nday   = 0
+  real :: xtime = XNEGUNDEF
+end type date_time
+#endif
 !
 end module modd_type_date