diff --git a/src/Numerics/Interpolation/CubicSpline.cs b/src/Numerics/Interpolation/CubicSpline.cs
index cd4183cb..0468c599 100644
--- a/src/Numerics/Interpolation/CubicSpline.cs
+++ b/src/Numerics/Interpolation/CubicSpline.cs
@@ -343,7 +343,7 @@ namespace MathNet.Numerics.Interpolation
         /// <summary>
         /// Gets a value indicating whether the algorithm supports differentiation (interpolated derivative).
         /// </summary>
-        public bool SupportsDifferentiation
+        bool IInterpolation.SupportsDifferentiation
         {
             get { return true; }
         }
@@ -351,7 +351,7 @@ namespace MathNet.Numerics.Interpolation
         /// <summary>
         /// Gets a value indicating whether the algorithm supports integration (interpolated quadrature).
         /// </summary>
-        public bool SupportsIntegration
+        bool IInterpolation.SupportsIntegration
         {
             get { return true; }
         }
diff --git a/src/Numerics/Interpolation/LinearSpline.cs b/src/Numerics/Interpolation/LinearSpline.cs
index c115ae26..eaaaf1f5 100644
--- a/src/Numerics/Interpolation/LinearSpline.cs
+++ b/src/Numerics/Interpolation/LinearSpline.cs
@@ -93,7 +93,7 @@ namespace MathNet.Numerics.Interpolation
         /// <summary>
         /// Gets a value indicating whether the algorithm supports differentiation (interpolated derivative).
         /// </summary>
-        public bool SupportsDifferentiation
+        bool IInterpolation.SupportsDifferentiation
         {
             get { return true; }
         }
@@ -101,7 +101,7 @@ namespace MathNet.Numerics.Interpolation
         /// <summary>
         /// Gets a value indicating whether the algorithm supports integration (interpolated quadrature).
         /// </summary>
-        public bool SupportsIntegration
+        bool IInterpolation.SupportsIntegration
         {
             get { return true; }
         }
diff --git a/src/Numerics/Interpolation/QuadraticSpline.cs b/src/Numerics/Interpolation/QuadraticSpline.cs
index 0fce11af..036e63df 100644
--- a/src/Numerics/Interpolation/QuadraticSpline.cs
+++ b/src/Numerics/Interpolation/QuadraticSpline.cs
@@ -66,7 +66,7 @@ namespace MathNet.Numerics.Interpolation
         /// <summary>
         /// Gets a value indicating whether the algorithm supports differentiation (interpolated derivative).
         /// </summary>
-        public bool SupportsDifferentiation
+        bool IInterpolation.SupportsDifferentiation
         {
             get { return true; }
         }
@@ -74,7 +74,7 @@ namespace MathNet.Numerics.Interpolation
         /// <summary>
         /// Gets a value indicating whether the algorithm supports integration (interpolated quadrature).
         /// </summary>
-        public bool SupportsIntegration
+        bool IInterpolation.SupportsIntegration
         {
             get { return true; }
         }