diff --git a/Sharpmake/CommandLine.cs b/Sharpmake/CommandLine.cs
index f7c7a0b46..821d08d1b 100644
--- a/Sharpmake/CommandLine.cs
+++ b/Sharpmake/CommandLine.cs
@@ -213,14 +213,14 @@ private static void Execute(Type type, object instance, string commandLine, stri
                             if (isStatic)
                             {
                                 string executeCode = string.Format("{0}.{1}({2});", type.FullName.Replace("+", "."), methodInfo.Name, parameter.Args);
-                                Action execute = Assembler.BuildDelegate<Action>(executeCode, type.Namespace, DefaultNamespaces.ToArray(), assemblies.ToArray());
+                                Action execute = Assembler.BuildDelegate<Action>(executeCode, type.Namespace, namespacesSet.ToArray(), assemblies.ToArray());
 
                                 execute();
                             }
                             else
                             {
                                 string executeCode = string.Format("((global::{0})obj).{1}({2});", type.FullName.Replace("+", "."), methodInfo.Name, parameter.Args);
-                                Action<object> execute = Assembler.BuildDelegate<Action<object>>(executeCode, type.Namespace, DefaultNamespaces.ToArray(), assemblies.ToArray());
+                                Action<object> execute = Assembler.BuildDelegate<Action<object>>(executeCode, type.Namespace, namespacesSet.ToArray(), assemblies.ToArray());
 
                                 execute(instance);
                             }