diff --git a/parameters/params_samir_class.py b/parameters/params_samir_class.py
index a2ec5b7cf2741039fef1894b7aed12b77b94880b..d6d60b5653c3a292ef623f2c9a1d42b812bfa1bf 100644
--- a/parameters/params_samir_class.py
+++ b/parameters/params_samir_class.py
@@ -258,7 +258,7 @@ class samir_parameters:
 
     def __init__(self, paramFile, mode_init = 1):
 
-        self.d = {}
+        self.classes = {}
 
         # Read csv file with Pandas
         csvFile = read_csv(paramFile, header = None)
@@ -281,16 +281,16 @@ class samir_parameters:
             if defaultClass:
                 defaultLine = line.copy()
             elif line['ClassName'] in ['error_rel','error_abs','min','max']:
-                self.d[line['ClassName']] ={}
+                self.classes[line['ClassName']] ={}
                 for k in line.keys():
                     if k != 'ClassName':
                         if line[k] == '':
                             line[k] = 0
-                        self.d[line['ClassName']][k] = float(line[k])
+                        self.classes[line['ClassName']][k] = float(line[k])
                 continue
             else:
                 for k in line.keys():
                     if line[k] == '':
                         line[k] = defaultLine[k]
-            self.d[line['ClassName']] = samir_parameters_LC(line, defaultClass, mode_init)
+            self.classes[line['ClassName']] = samir_parameters_LC(line, defaultClass, mode_init)
             defaultClass = False