diff --git a/mlprec/mld_dumf_bld.f90 b/mlprec/mld_dumf_bld.f90
index b879ced9..a662fb08 100644
--- a/mlprec/mld_dumf_bld.f90
+++ b/mlprec/mld_dumf_bld.f90
@@ -58,7 +58,8 @@ subroutine mld_dumf_bld(a,desc_a,p,info)
   call psb_info(ictxt, me, np)
 
   if (toupper(a%fida) /= 'CSC') then
-    write(0,*) 'Unimplemented input to mld_umf_BLD'
+    info=135
+    call psb_errpush(info,name,a_err=a%fida)
     goto 9999
   endif
 
diff --git a/mlprec/mld_zumf_bld.f90 b/mlprec/mld_zumf_bld.f90
index a9979b3d..b696548d 100644
--- a/mlprec/mld_zumf_bld.f90
+++ b/mlprec/mld_zumf_bld.f90
@@ -54,12 +54,12 @@ subroutine mld_zumf_bld(a,desc_a,p,info)
   info=0
   name='mld_zumf_bld'
   call psb_erractionsave(err_act)
-
   ictxt = psb_cd_get_context(desc_a)
   call psb_info(ictxt, me, np)
 
   if (toupper(a%fida) /= 'CSC') then
-    write(0,*) 'Unimplemented input to mld_umf_BLD'
+    info=135
+    call psb_errpush(info,name,a_err=a%fida)
     goto 9999
   endif