diff --git a/src/test/java/org/apache/commons/math4/fitting/GaussianCurveFitterTest.java b/src/test/java/org/apache/commons/math4/fitting/GaussianCurveFitterTest.java
index dcd0a36f5..0624f9af4 100644
--- a/src/test/java/org/apache/commons/math4/fitting/GaussianCurveFitterTest.java
+++ b/src/test/java/org/apache/commons/math4/fitting/GaussianCurveFitterTest.java
@@ -185,9 +185,9 @@ public class GaussianCurveFitterTest {
         GaussianCurveFitter fitter = GaussianCurveFitter.create();
         double[] parameters = fitter.fit(createDataset(DATASET1).toList());
 
-        Assert.assertEquals(3496978.1837704973, parameters[0], 1e-4);
-        Assert.assertEquals(4.054933085999146, parameters[1], 1e-4);
-        Assert.assertEquals(0.015039355620304326, parameters[2], 1e-4);
+        Assert.assertEquals(3496978.1837704973, parameters[0], 1e-7);
+        Assert.assertEquals(4.054933085999146, parameters[1], 1e-16);
+        Assert.assertEquals(0.015039355620304326, parameters[2], 1e-15);
     }
 
     @Test