diff --git a/src/perturbation/EZFIO.cfg b/src/perturbation/EZFIO.cfg
index c4c304e0..ab9cfc1a 100644
--- a/src/perturbation/EZFIO.cfg
+++ b/src/perturbation/EZFIO.cfg
@@ -6,21 +6,19 @@ default: True
 
 [pt2_max]
 type: PT2_energy
-doc: The selection process stops when the largest |PT2| (for all the state) is lower
-     than `pt2_max` in absolute value
+doc: The selection process stops when the largest |PT2| (for all the state) is lower than `pt2_max` in absolute value
 interface: ezfio,provider,ocaml
 default: 0.0001
 
 [pt2_relative_error]
 type: Normalized_float
-doc: Stop stochastic |PT2| when the relative error is smaller than `PT2_relative_error`
+doc: Stop stochastic |PT2| when the relative error is smaller than `pT2_relative_error`
 interface: ezfio,provider,ocaml
 default: 0.002
 
 [correlation_energy_ratio_max]
 type: Normalized_float
-doc: The selection process stops at a fixed correlation ratio (useful for getting same accuracy between molecules).
-     Defined as :math:`{E_{CI}-E_{HF}}/{E_{CI}+E_{PT2} - E_{HF}}`. 
+doc: The selection process stops at a fixed correlation ratio (useful for getting same accuracy between molecules). Defined as :math:`(E_{CI}-E_{HF})/(E_{CI}+E_{PT2} - E_{HF})`.
 interface: ezfio,provider,ocaml
 default: 1.00