diff --git a/src/scf_utils/roothaan_hall_scf.irp.f b/src/scf_utils/roothaan_hall_scf.irp.f
index e78630c2..9863634a 100644
--- a/src/scf_utils/roothaan_hall_scf.irp.f
+++ b/src/scf_utils/roothaan_hall_scf.irp.f
@@ -277,7 +277,7 @@ END_DOC
     return
   endif
 
- if (rcond == 0.d-10) then
+ if (rcond < 1.d-14) then
    dim_DIIS = 0
    return
  endif