diff --git a/src/Extrema/Extrema_FuncExtPC.gxx b/src/Extrema/Extrema_FuncExtPC.gxx
index 9869e239cc..1f9753985c 100755
--- a/src/Extrema/Extrema_FuncExtPC.gxx
+++ b/src/Extrema/Extrema_FuncExtPC.gxx
@@ -316,7 +316,9 @@ Standard_Boolean Extrema_FuncExtPC::Values (const Standard_Real U, Standard_Real
     if(myU-myUinfium < 2*aDelta)
       {
       F1=F;
-      const Standard_Real U1 = myU, U2 = myU+aDelta, U3 = myU+2*aDelta;
+      //const Standard_Real U1 = myU;
+      const Standard_Real U2 = myU + aDelta;
+      const Standard_Real U3 = myU + aDelta * 2.0;
       
       if(!((Value(U2,F2)) && (Value(U3,F3))))
         {
@@ -337,8 +339,10 @@ Standard_Boolean Extrema_FuncExtPC::Values (const Standard_Real U, Standard_Real
     else
       {
       F3 = F;
-      const Standard_Real U1 = myU-2*aDelta, U2 = myU-aDelta, U3 = myU;
-      
+      const Standard_Real U1 = myU - aDelta * 2.0;
+      const Standard_Real U2 = myU - aDelta;
+      //const Standard_Real U3 = myU;
+
       if(!((Value(U2,F2)) && (Value(U1,F1))))
         {
 #ifdef DEB
diff --git a/src/Extrema/Extrema_GExtPC.gxx b/src/Extrema/Extrema_GExtPC.gxx
index 54b87d46f2..e27e64382c 100755
--- a/src/Extrema/Extrema_GExtPC.gxx
+++ b/src/Extrema/Extrema_GExtPC.gxx
@@ -105,7 +105,6 @@ void Extrema_GExtPC::Perform(const ThePoint& P)
       n = TheCurveTool::NbIntervals(*((TheCurve*)myC), GeomAbs_C2);
       TColStd_Array1OfReal theInter(1, n+1);
       Standard_Boolean isPeriodic = TheCurveTool::IsPeriodic(*((TheCurve*)myC));
-      Standard_Real aPeriodicShift = 0.;
       TheCurveTool::Intervals(*((TheCurve*)myC), theInter, GeomAbs_C2);
       mysample = Max(mysample/n, 17);
       TheVector V1;
diff --git a/src/Extrema/Extrema_GenExtCC.gxx b/src/Extrema/Extrema_GenExtCC.gxx
index 5977910ff8..03daf93290 100755
--- a/src/Extrema/Extrema_GenExtCC.gxx
+++ b/src/Extrema/Extrema_GenExtCC.gxx
@@ -146,8 +146,6 @@ a- Constitution du tableau des distances (TbDist2(0,NbU+1,0,NbV+1)):
     aCache2->CalculatePoints();
 
 // Calcul des distances
-  const Curve1& aCurve1 = *((Curve1*)(myF.CurvePtr (1)));
-  const Curve2& aCurve2 = *((Curve1*)(myF.CurvePtr (2)));
   const Handle(ArrayOfPnt)& aPntArray1 = aCache1->Points();
   const Handle(ArrayOfPnt)& aPntArray2 = aCache2->Points();
   Standard_Integer NoU, NoV;
diff --git a/src/Extrema/Extrema_GenExtPS.cxx b/src/Extrema/Extrema_GenExtPS.cxx
index 926202f7c2..82982b6d49 100755
--- a/src/Extrema/Extrema_GenExtPS.cxx
+++ b/src/Extrema/Extrema_GenExtPS.cxx
@@ -752,7 +752,6 @@ void Extrema_GenExtPS::FindSolution(const gp_Pnt& /*P*/,
   Tol(2) = mytolv;
 
   math_Vector UV(1, 2);
-
   theParams.Parameter(UV(1), UV(2));
 
   math_Vector UVinf(1,2), UVsup(1,2);
@@ -761,15 +760,9 @@ void Extrema_GenExtPS::FindSolution(const gp_Pnt& /*P*/,
   UVsup(1) = myusup;
   UVsup(2) = myvsup;
 
-  math_Vector errors(1,2);
-  math_Vector root(1, 2);
+  const Standard_Integer aNbMaxIter = 100;
+  math_FunctionSetRoot S (myF, UV, Tol, UVinf, UVsup, aNbMaxIter);
 
-  Standard_Integer aNbMaxIter = 100;
-
-  gp_Pnt PStart = theParams.Value();
-  
-  math_FunctionSetRoot S (myF,UV,Tol,UVinf,UVsup, aNbMaxIter);
-  
   myDone = Standard_True;
 }