diff --git a/commons-math-legacy/src/test/java/org/apache/commons/math4/legacy/fitting/leastsquares/LevenbergMarquardtOptimizerTest.java b/commons-math-legacy/src/test/java/org/apache/commons/math4/legacy/fitting/leastsquares/LevenbergMarquardtOptimizerTest.java
index cdac94d..4862eb4 100644
--- a/commons-math-legacy/src/test/java/org/apache/commons/math4/legacy/fitting/leastsquares/LevenbergMarquardtOptimizerTest.java
+++ b/commons-math-legacy/src/test/java/org/apache/commons/math4/legacy/fitting/leastsquares/LevenbergMarquardtOptimizerTest.java
@@ -268,9 +268,9 @@
         final double[] asymptoticStandardErrorFound = optimum.getSigma(1e-14).toArray();
 
         // Check that the parameters are found within the assumed error bars.
-        Assert.assertEquals(xCenter, paramFound[0], 2 * asymptoticStandardErrorFound[0]);
-        Assert.assertEquals(yCenter, paramFound[1], 2 * asymptoticStandardErrorFound[1]);
-        Assert.assertEquals(radius, paramFound[2], asymptoticStandardErrorFound[2]);
+        Assert.assertEquals("Delta=" + 2 * asymptoticStandardErrorFound[0], xCenter, paramFound[0], 2 * asymptoticStandardErrorFound[0]);
+        Assert.assertEquals("Delta=" + 2 * asymptoticStandardErrorFound[1], yCenter, paramFound[1], 2 * asymptoticStandardErrorFound[1]);
+        Assert.assertEquals("Delta=" + 2 * asymptoticStandardErrorFound[2], radius, paramFound[2], asymptoticStandardErrorFound[2]);
     }
 
     @Test