diff --git a/base/modules/psb_const_mod.F90 b/base/modules/psb_const_mod.F90
index bcf602cc..45b5087a 100644
--- a/base/modules/psb_const_mod.F90
+++ b/base/modules/psb_const_mod.F90
@@ -89,9 +89,9 @@ module psb_const_mod
   ! 
   ! Version
   !
-  character(len=*), parameter    :: psb_version_string_ = "3.4.0"
+  character(len=*), parameter    :: psb_version_string_ = "3.5.0"
   integer(psb_ipk_), parameter   :: psb_version_major_  = 3
-  integer(psb_ipk_), parameter   :: psb_version_minor_  = 4
+  integer(psb_ipk_), parameter   :: psb_version_minor_  = 5
   integer(psb_ipk_), parameter   :: psb_patchlevel_     = 0
 
   !
diff --git a/prec/psb_c_bjacprec.f90 b/prec/psb_c_bjacprec.f90
index ceb60c61..dab99641 100644
--- a/prec/psb_c_bjacprec.f90
+++ b/prec/psb_c_bjacprec.f90
@@ -134,6 +134,7 @@ module psb_c_bjacprec
 contains
 
   subroutine psb_c_bjac_precdescr(prec,iout,root)
+    use psb_penv_mod
     use psb_penv_mod
     use psb_error_mod
     implicit none 
diff --git a/prec/psb_c_diagprec.f90 b/prec/psb_c_diagprec.f90
index a8267070..3326ccf1 100644
--- a/prec/psb_c_diagprec.f90
+++ b/prec/psb_c_diagprec.f90
@@ -161,6 +161,8 @@ contains
   
 
   subroutine psb_c_diag_precdescr(prec,iout,root)
+    use psb_penv_mod
+    use psb_error_mod
     use psb_penv_mod
     use psb_error_mod
     Implicit None
diff --git a/prec/psb_c_nullprec.f90 b/prec/psb_c_nullprec.f90
index 5304bff1..9d6f2508 100644
--- a/prec/psb_c_nullprec.f90
+++ b/prec/psb_c_nullprec.f90
@@ -159,6 +159,8 @@ contains
   subroutine psb_c_null_precdescr(prec,iout,root)
     use psb_penv_mod
     use psb_error_mod
+    use psb_penv_mod
+    use psb_error_mod
     
     Implicit None
 
diff --git a/prec/psb_s_bjacprec.f90 b/prec/psb_s_bjacprec.f90
index e8ec9b86..cc06ee5b 100644
--- a/prec/psb_s_bjacprec.f90
+++ b/prec/psb_s_bjacprec.f90
@@ -134,6 +134,7 @@ module psb_s_bjacprec
 contains
 
   subroutine psb_s_bjac_precdescr(prec,iout,root)
+    use psb_penv_mod
     use psb_penv_mod
     use psb_error_mod
     implicit none 
diff --git a/prec/psb_s_diagprec.f90 b/prec/psb_s_diagprec.f90
index cf7c5991..4b1b6f58 100644
--- a/prec/psb_s_diagprec.f90
+++ b/prec/psb_s_diagprec.f90
@@ -161,6 +161,8 @@ contains
   
 
   subroutine psb_s_diag_precdescr(prec,iout,root)
+    use psb_penv_mod
+    use psb_error_mod
     use psb_penv_mod
     use psb_error_mod
     Implicit None
diff --git a/prec/psb_s_nullprec.f90 b/prec/psb_s_nullprec.f90
index 8247573d..8ebdf7a4 100644
--- a/prec/psb_s_nullprec.f90
+++ b/prec/psb_s_nullprec.f90
@@ -159,6 +159,8 @@ contains
   subroutine psb_s_null_precdescr(prec,iout,root)
     use psb_penv_mod
     use psb_error_mod
+    use psb_penv_mod
+    use psb_error_mod
     
     Implicit None
 
diff --git a/prec/psb_z_bjacprec.f90 b/prec/psb_z_bjacprec.f90
index 2c63b002..26196b5c 100644
--- a/prec/psb_z_bjacprec.f90
+++ b/prec/psb_z_bjacprec.f90
@@ -134,6 +134,7 @@ module psb_z_bjacprec
 contains
 
   subroutine psb_z_bjac_precdescr(prec,iout,root)
+    use psb_penv_mod
     use psb_penv_mod
     use psb_error_mod
     implicit none 
diff --git a/prec/psb_z_diagprec.f90 b/prec/psb_z_diagprec.f90
index 7ddc168a..65d07651 100644
--- a/prec/psb_z_diagprec.f90
+++ b/prec/psb_z_diagprec.f90
@@ -161,6 +161,8 @@ contains
   
 
   subroutine psb_z_diag_precdescr(prec,iout,root)
+    use psb_penv_mod
+    use psb_error_mod
     use psb_penv_mod
     use psb_error_mod
     Implicit None
diff --git a/prec/psb_z_nullprec.f90 b/prec/psb_z_nullprec.f90
index d8c4f0ab..9a62b8e7 100644
--- a/prec/psb_z_nullprec.f90
+++ b/prec/psb_z_nullprec.f90
@@ -159,6 +159,8 @@ contains
   subroutine psb_z_null_precdescr(prec,iout,root)
     use psb_penv_mod
     use psb_error_mod
+    use psb_penv_mod
+    use psb_error_mod
     
     Implicit None