diff --git a/commons-math-legacy/src/test/java/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/SimplexOptimizerTest.java b/commons-math-legacy/src/test/java/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/SimplexOptimizerTest.java
index a8fc3ff..33d6190 100644
--- a/commons-math-legacy/src/test/java/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/SimplexOptimizerTest.java
+++ b/commons-math-legacy/src/test/java/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/SimplexOptimizerTest.java
@@ -48,7 +48,6 @@
 import org.apache.commons.math4.legacy.optim.nonlinear.scalar.GoalType;
 import org.apache.commons.math4.legacy.optim.nonlinear.scalar.ObjectiveFunction;
 import org.apache.commons.math4.legacy.optim.nonlinear.scalar.SimulatedAnnealing;
-import org.apache.commons.math4.legacy.optim.nonlinear.scalar.PopulationSize;
 import org.apache.commons.math4.legacy.optim.nonlinear.scalar.TestFunction;
 
 /**
@@ -195,7 +194,6 @@
             final int dim = start.length;
 
             final SimulatedAnnealing sa;
-            final PopulationSize popSize;
             if (withSA) {
                 final SimulatedAnnealing.CoolingSchedule coolSched =
                     SimulatedAnnealing.CoolingSchedule.decreasingExponential(SA_COOL_FACTOR);
@@ -205,11 +203,8 @@
                                             SA_END_PROB,
                                             coolSched,
                                             RandomSource.KISS.create());
-
-                popSize = new PopulationSize(dim);
             } else {
                 sa = null;
-                popSize = null;
             }
 
             final SimplexOptimizer optim = new SimplexOptimizer(-1, CONVERGENCE_CHECK);
@@ -225,8 +220,7 @@
                                new InitialGuess(start),
                                initialSimplex,
                                factory,
-                               sa,
-                               popSize);
+                               sa);
 
             final double[] endPoint = result.getPoint();
             final double funcValue = result.getValue();
diff --git a/commons-math-legacy/src/test/resources/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/std_test_func.simplex.hedar_fukushima.csv b/commons-math-legacy/src/test/resources/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/std_test_func.simplex.hedar_fukushima.csv
index f63414c..d6c0d66 100644
--- a/commons-math-legacy/src/test/resources/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/std_test_func.simplex.hedar_fukushima.csv
+++ b/commons-math-legacy/src/test/resources/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/std_test_func.simplex.hedar_fukushima.csv
@@ -30,22 +30,22 @@
 #
 # Caveat: Some tests are commented out (cf. JIRA: MATH-1552).
 #
-PARABOLA, 8, 0 0 0 0 0 0 0 0, 20, 40, 1e-4, 7200, true
-ROSENBROCK, 2, 1 1, 0.9, 1.1, 1e-4, 420, true
-CIGAR, 2, 0 0, 2, 3, 5e-5, 240, true
-SPHERE, 2, 0 0, 2, 3, 5e-4, 200, true
-ELLI, 2, 0 0, 3, 4, 1e-4, 350, true
-TWO_AXES, 2, 0 0, 3, 4, 1e-4, 400, true
-CIG_TAB, 2, 0 0, 3, 4, 1e-3, 280, true
-TABLET, 2, 0 0, 3, 4, 2e-4, 340, true
-SUM_POW, 2, 0 0, 3, 4, 1e-2, 190,  true
-ACKLEY, 2, 0 0, 2, 4, 1e-6, 310, true
-RASTRIGIN, 2, 0 0, 6, 10, 5e-5, 600, true
-GRIEWANK, 2, 0 0, 2, 3, 1e-1, 500, true
-LEVY, 2, 1 1, 0.9, 1.1, 1e-3, 200, true
-SCHWEFEL, 2, 420.9687 420.9687, 9, 11, 1, 200, true
-ZAKHAROV, 2, 0 0, 3, 4, 1e-4, 1000, true
-PERM, 2, 1 2, 0.9, 1.1, 2e-3, 260, true
-STYBLINSKI_TANG, 2, -2.903534 -2.903534, 1, 2, 1e-4, 210, true
+PARABOLA, 8, 0 0 0 0 0 0 0 0, 20, 40, 1e-4, 900, true
+ROSENBROCK, 2, 1 1, 0.9, 1.1, 1e-4, 160, true
+CIGAR, 2, 0 0, 2, 3, 5e-5, 140, true
+SPHERE, 2, 0 0, 2, 3, 5e-4, 110, true
+ELLI, 2, 0 0, 3, 4, 1e-4, 150, true
+TWO_AXES, 2, 0 0, 3, 4, 1e-4, 160, true
+CIG_TAB, 2, 0 0, 3, 4, 1e-3, 150, true
+TABLET, 2, 0 0, 3, 4, 2e-4, 160, true
+SUM_POW, 2, 0 0, 3, 4, 1e-2, 110,  true
+ACKLEY, 2, 0 0, 2, 4, 1e-6, 170, true
+RASTRIGIN, 2, 0 0, 6, 10, 5e-5, 130, true
+GRIEWANK, 2, 0 0, 2, 3, 1e-1, 100, true
+LEVY, 2, 1 1, 0.9, 1.1, 1e-3, 110, true
+SCHWEFEL, 2, 420.9687 420.9687, 9, 11, 1, 110, true
+ZAKHAROV, 2, 0 0, 3, 4, 1e-4, 130, true
+PERM, 2, 1 2, 0.9, 1.1, 2e-3, 150, true
+STYBLINSKI_TANG, 2, -2.903534 -2.903534, 1, 2, 1e-4, 120, true
 #HAPPY_CAT, 2, -1 -1, 2, 3, 1e-4, 500, true
 #SALOMON, 2, 0 0, 2, 3, 1e-4, 500, true
diff --git a/commons-math-legacy/src/test/resources/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/std_test_func.simplex.nelder_mead.csv b/commons-math-legacy/src/test/resources/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/std_test_func.simplex.nelder_mead.csv
index 99e520d..5ee1cae 100644
--- a/commons-math-legacy/src/test/resources/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/std_test_func.simplex.nelder_mead.csv
+++ b/commons-math-legacy/src/test/resources/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/std_test_func.simplex.nelder_mead.csv
@@ -45,7 +45,7 @@
 ACKLEY, 2, 0 0, 2, 4, 1e-6, 145, false
 ACKLEY, 2, 0 0, 2, 4, 1e-6, 160, true
 RASTRIGIN, 2, 0 0, 6, 10, 5e-5, 105, false
-RASTRIGIN, 2, 0 0, 6, 10, 5e-5, 120, true
+RASTRIGIN, 2, 0 0, 6, 10, 5e-5, 140, true
 GRIEWANK, 2, 0 0, 2, 3, 1e-1, 75, false
 GRIEWANK, 2, 0 0, 2, 3, 1e-1, 90, true
 LEVY, 2, 1 1, 0.9, 1.1, 1e-3, 75, false