diff --git a/src/davidson/EZFIO.cfg b/src/davidson/EZFIO.cfg
index 92c41b4c..b7fb633c 100644
--- a/src/davidson/EZFIO.cfg
+++ b/src/davidson/EZFIO.cfg
@@ -63,3 +63,10 @@ type: logical
 doc: If |true|, don't use denominator
 default: False
 interface: ezfio,provider,ocaml
+
+[threshold_nonsym_davidson]
+type: Threshold
+doc: Thresholds of non-symetric Davidson's algorithm 
+interface: ezfio,provider,ocaml
+default: 1.e-5
+