diff --git a/doc/runtime-api.html b/doc/runtime-api.html
index 6c22f39f5..dd79eb152 100644
--- a/doc/runtime-api.html
+++ b/doc/runtime-api.html
@@ -870,7 +870,7 @@ List<String> funsByCat = gr.getFunctionsByCat("Weekday");
 ....
 </pre>
 <pre class="csharp">
-IList&lt;String&gt; funsByCat = gr.FunctionsByCat("Weekday");    //// TODO
+IEnumerable&lt;String&gt; funsByCat = gr.FunctionsByCat("Weekday");
 ....
 </pre>
 The full type of a function can be retrieved as:
diff --git a/src/runtime/dotNet/PGF.cs b/src/runtime/dotNet/PGF.cs
index 5abfbe91c..6fb7bad65 100644
--- a/src/runtime/dotNet/PGF.cs
+++ b/src/runtime/dotNet/PGF.cs
@@ -79,7 +79,7 @@ namespace PGFSharp
         /// Returns a list with all functions with a given return category.
         /// </summary>
         /// <param name="catName">The name of the return category.</param>
-        public IEnumerable<string> FunctionByCategory(string catName)
+        public IEnumerable<string> FunctionsByCat(string catName)
         {
             using (var str = new Native.NativeString(catName))
             {