diff --git a/base/internals/psi_desc_impl.f90 b/base/internals/psi_desc_impl.f90
index 81aa4a2e0..c98de32b0 100644
--- a/base/internals/psi_desc_impl.f90
+++ b/base/internals/psi_desc_impl.f90
@@ -30,7 +30,7 @@
 !!$ 
 !!$  
 submodule (psi_i_mod) psi_desc_impl_mod
-
+  use psb_error_mod
 contains
 
   subroutine psi_renum_index(iperm,idx,info)