diff --git a/base/serial/impl/psb_c_base_mat_impl.F90 b/base/serial/impl/psb_c_base_mat_impl.F90
index 2a2ed693..f4bc43cc 100644
--- a/base/serial/impl/psb_c_base_mat_impl.F90
+++ b/base/serial/impl/psb_c_base_mat_impl.F90
@@ -2006,8 +2006,8 @@ subroutine psb_c_base_vect_mv(alpha,a,x,beta,y,info,trans)
 
   ! For the time being we just throw everything back
   ! onto the normal routines.
-  call x%sync()
-  call y%sync()
+  if (x%is_dev()) call x%sync()
+  if (y%is_dev()) call y%sync()
   call a%spmm(alpha,x%v,beta,y%v,info,trans)
   call y%set_host()
 end subroutine psb_c_base_vect_mv
diff --git a/base/serial/impl/psb_d_base_mat_impl.F90 b/base/serial/impl/psb_d_base_mat_impl.F90
index 73c2c920..1a8dc084 100644
--- a/base/serial/impl/psb_d_base_mat_impl.F90
+++ b/base/serial/impl/psb_d_base_mat_impl.F90
@@ -2006,8 +2006,8 @@ subroutine psb_d_base_vect_mv(alpha,a,x,beta,y,info,trans)
 
   ! For the time being we just throw everything back
   ! onto the normal routines.
-  call x%sync()
-  call y%sync()
+  if (x%is_dev()) call x%sync()
+  if (y%is_dev()) call y%sync()
   call a%spmm(alpha,x%v,beta,y%v,info,trans)
   call y%set_host()
 end subroutine psb_d_base_vect_mv
diff --git a/base/serial/impl/psb_s_base_mat_impl.F90 b/base/serial/impl/psb_s_base_mat_impl.F90
index 1c52d982..0b47d472 100644
--- a/base/serial/impl/psb_s_base_mat_impl.F90
+++ b/base/serial/impl/psb_s_base_mat_impl.F90
@@ -2006,8 +2006,8 @@ subroutine psb_s_base_vect_mv(alpha,a,x,beta,y,info,trans)
 
   ! For the time being we just throw everything back
   ! onto the normal routines.
-  call x%sync()
-  call y%sync()
+  if (x%is_dev()) call x%sync()
+  if (y%is_dev()) call y%sync()
   call a%spmm(alpha,x%v,beta,y%v,info,trans)
   call y%set_host()
 end subroutine psb_s_base_vect_mv
diff --git a/base/serial/impl/psb_z_base_mat_impl.F90 b/base/serial/impl/psb_z_base_mat_impl.F90
index ef7b2dd6..2d97f698 100644
--- a/base/serial/impl/psb_z_base_mat_impl.F90
+++ b/base/serial/impl/psb_z_base_mat_impl.F90
@@ -2006,8 +2006,8 @@ subroutine psb_z_base_vect_mv(alpha,a,x,beta,y,info,trans)
 
   ! For the time being we just throw everything back
   ! onto the normal routines.
-  call x%sync()
-  call y%sync()
+  if (x%is_dev()) call x%sync()
+  if (y%is_dev()) call y%sync()
   call a%spmm(alpha,x%v,beta,y%v,info,trans)
   call y%set_host()
 end subroutine psb_z_base_vect_mv