diff --git a/src/ccsd/ccsd_space_orb_sub.irp.f b/src/ccsd/ccsd_space_orb_sub.irp.f
index e65b4e39..e4907f22 100644
--- a/src/ccsd/ccsd_space_orb_sub.irp.f
+++ b/src/ccsd/ccsd_space_orb_sub.irp.f
@@ -237,6 +237,7 @@ subroutine run_ccsd_space_orb
       call update_t2(nO,nV,cc_space_f_o,cc_space_f_v,r2%f,t2%f)
     else
       print*,'Unkown cc_method_method: '//cc_update_method
+      call abort
     endif
 
     call update_tau_space(nO,nV,t1%f,t1,t2,tau)