diff --git a/mzLib/MassSpectrometry/PeakIndexing/PeakSpline/XicSpline.cs b/mzLib/MassSpectrometry/PeakIndexing/PeakSpline/XicSpline.cs
index 80280231e..bd9d0f55d 100644
--- a/mzLib/MassSpectrometry/PeakIndexing/PeakSpline/XicSpline.cs
+++ b/mzLib/MassSpectrometry/PeakIndexing/PeakSpline/XicSpline.cs
@@ -107,5 +107,17 @@ public void AddPeaks(float[] rtArray, float[] intensityArray, out double[] newRt
                 }
             }
         }
+
+        public override string ToString()
+        {
+            var sb = new StringBuilder();
+            sb.AppendLine($"XicSplineSettings: ");
+
+            sb.AppendLine($"    XicSplineType: {GetType().Name}");
+            sb.AppendLine($"    SplineRtInterval: {SplineRtInterval}");
+            sb.AppendLine($"    NumberOfPeaksToAdd: {NumberOfPeaksToAdd}");
+            sb.AppendLine($"    Gap: {Gap}");
+            return sb.ToString();
+        }
     }
 }
diff --git a/mzLib/Test/TestXic.cs b/mzLib/Test/TestXic.cs
index 2f5264fb5..43559489a 100644
--- a/mzLib/Test/TestXic.cs
+++ b/mzLib/Test/TestXic.cs
@@ -1,17 +1,12 @@
 using Chemistry;
 using FlashLFQ;
 using MassSpectrometry;
-using MathNet.Numerics.Interpolation;
 using MzLibUtil;
 using NUnit.Framework;
 using System.Collections.Generic;
 using System.Linq;
 using Assert = NUnit.Framework.Legacy.ClassicAssert;
-using MassSpectrometry;
-using Microsoft.ML.Transforms;
 using MathNet.Numerics.Distributions;
-using System.Collections;
-using Proteomics.AminoAcidPolymer;
 
 namespace Test
 {
@@ -336,5 +331,19 @@ public static void TestBspline()
             Assert.That(xic.XYData.First().Item1, Is.EqualTo(xic.StartRT).Within(0.0001));
             Assert.That(xic.XYData.Last().Item1, Is.EqualTo(xic.EndRT).Within(0.0001));
         }
+
+        [Test]
+        public static void TestXicSplineToString()
+        {
+            var cubicSpline = new XicCubicSpline(0.05);
+            var result = cubicSpline.ToString();
+            var lines = result.Split('\n').Select(l => l.Trim()).ToArray();
+            Assert.That(lines.Any(l => l.Contains("XicSplineSettings:")), Is.True);
+            Assert.That(lines.Any(l => l.Contains("XicSplineType: XicCubicSpline")), Is.True);
+            Assert.That(lines.Any(l => l.Contains("SplineRtInterval: 0.05")), Is.True);
+            Assert.That(lines.Any(l => l.Contains("NumberOfPeaksToAdd: 0")), Is.True);
+            Assert.That(lines.Any(l => l.Contains("Gap: 1")), Is.True);
+        }
     }
 }
+