diff --git a/src/main/java/org/apache/commons/math4/analysis/interpolation/SplineInterpolator.java b/src/main/java/org/apache/commons/math4/analysis/interpolation/SplineInterpolator.java
index 9515dde87..626d9addb 100644
--- a/src/main/java/org/apache/commons/math4/analysis/interpolation/SplineInterpolator.java
+++ b/src/main/java/org/apache/commons/math4/analysis/interpolation/SplineInterpolator.java
@@ -82,13 +82,13 @@ public class SplineInterpolator implements UnivariateInterpolator {
         MathArrays.checkOrder(x);
 
         // Differences between knot points
-        final double h[] = new double[n];
+        final double[] h = new double[n];
         for (int i = 0; i < n; i++) {
             h[i] = x[i + 1] - x[i];
         }
 
-        final double mu[] = new double[n];
-        final double z[] = new double[n + 1];
+        final double[] mu = new double[n];
+        final double[] z = new double[n + 1];
         mu[0] = 0d;
         z[0] = 0d;
         double g = 0;
@@ -100,9 +100,9 @@ public class SplineInterpolator implements UnivariateInterpolator {
         }
 
         // cubic spline coefficients --  b is linear, c quadratic, d is cubic (original y's are constants)
-        final double b[] = new double[n];
-        final double c[] = new double[n + 1];
-        final double d[] = new double[n];
+        final double[] b = new double[n];
+        final double[] c = new double[n + 1];
+        final double[] d = new double[n];
 
         z[n] = 0d;
         c[n] = 0d;
@@ -113,8 +113,8 @@ public class SplineInterpolator implements UnivariateInterpolator {
             d[j] = (c[j + 1] - c[j]) / (3d * h[j]);
         }
 
-        final PolynomialFunction polynomials[] = new PolynomialFunction[n];
-        final double coefficients[] = new double[4];
+        final PolynomialFunction[] polynomials = new PolynomialFunction[n];
+        final double[] coefficients = new double[4];
         for (int i = 0; i < n; i++) {
             coefficients[0] = y[i];
             coefficients[1] = b[i];