diff --git a/src/Silverlight/Properties/Resources.Designer.cs b/src/Silverlight/Properties/Resources.Designer.cs
index 1a252cba..07b931d0 100644
--- a/src/Silverlight/Properties/Resources.Designer.cs
+++ b/src/Silverlight/Properties/Resources.Designer.cs
@@ -159,6 +159,15 @@ namespace MathNet.Numerics.Properties {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to Matrix must be positive definite..
+        /// </summary>
+        internal static string ArgumentMatrixPositiveDefinite {
+            get {
+                return ResourceManager.GetString("ArgumentMatrixPositiveDefinite", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to Matrix column dimensions must agree..
         /// </summary>
diff --git a/src/Silverlight/Properties/Resources.resx b/src/Silverlight/Properties/Resources.resx
index f8f60969..47ae1c4f 100644
--- a/src/Silverlight/Properties/Resources.resx
+++ b/src/Silverlight/Properties/Resources.resx
@@ -288,4 +288,7 @@
   <data name="ProposalDistributionNoUpperBound" xml:space="preserve">
     <value>The sampler's proposal distribution is not upper bounding the target density.</value>
   </data>
+  <data name="ArgumentMatrixPositiveDefinite" xml:space="preserve">
+    <value>Matrix must be positive definite.</value>
+  </data>
 </root>
\ No newline at end of file