diff --git a/source/Model/Equivalence/EQ_OneParameter.cxx b/source/Model/Equivalence/EQ_OneParameter.cxx
index 2c89a0c93f15c451db8a066915a9b845bb1227b5..66368eb8dd290c09a390363de2ea4970c1f15a40 100644
--- a/source/Model/Equivalence/EQ_OneParameter.cxx
+++ b/source/Model/Equivalence/EQ_OneParameter.cxx
@@ -767,7 +767,7 @@ double EQ_OneParameter::CalculateTargetParameter(IsotopicVector TheFuel,
                                                  string TargetParameterName) {
   double ParameterToCalculate = 0;
   if (TargetParameterName == "BurnUpMax")
-    ParameterToCalculate = CalculateBurnUpMax(TheFuel, fModelParameter);
+    ParameterToCalculate = CalculateBurnUpMax(TheFuel);
   else if (TargetParameterName == "keffBOC")
     ParameterToCalculate = CalculateKeffAtBOC(TheFuel);
   else {
@@ -782,8 +782,7 @@ double EQ_OneParameter::CalculateTargetParameter(IsotopicVector TheFuel,
   return ParameterToCalculate;
 }
 //________________________________________________________________________
-double EQ_OneParameter::CalculateBurnUpMax(IsotopicVector TheFuel,
-                                           map<string, double> ModelParameter) {
+double EQ_OneParameter::CalculateBurnUpMax(IsotopicVector TheFuel) {
   /**************************************************************************/
   // With a dichotomy, the maximal irradiation time (TheFinalTime) is calculated
   // When average Kinf is very close (according "Precision") to the threshold
diff --git a/source/Model/Equivalence/EQ_OneParameter.hxx b/source/Model/Equivalence/EQ_OneParameter.hxx
index 3255bebc2eab6cb78797df9ab2c30132a3a8fb8f..b7385f7b3392801d85e6a85a138317a6cafcfba6 100644
--- a/source/Model/Equivalence/EQ_OneParameter.hxx
+++ b/source/Model/Equivalence/EQ_OneParameter.hxx
@@ -115,12 +115,7 @@ class EQ_OneParameter : public EquivalenceModel {
                                                                 //! parameter
   //! associated to
   //! the fuel --->
-  //! ex :
-  //! BurnUpMax,
-  //! keffBOC,
-  //! keffEOC, ...
-  double CalculateBurnUpMax(IsotopicVector TheFuel,
-                            map<string, double> ModelParameter);  //!<Calculate
+  double CalculateBurnUpMax(IsotopicVector TheFuel);  //!<Calculate
                                                                   //! the BU max
   //! associated
   //! to a fuel