diff --git a/src/_premake_init.lua b/src/_premake_init.lua
index ea7cc468..ea2819f3 100644
--- a/src/_premake_init.lua
+++ b/src/_premake_init.lua
@@ -959,6 +959,12 @@
 		end,
 	}
 
+  api.register {
+    name = "customtoolnamespace",
+    scope = "config",
+    kind = "string",
+  }
+
 	api.register {
 		name = "undefines",
 		scope = "config",
diff --git a/src/actions/vstudio/vs2005_csproj.lua b/src/actions/vstudio/vs2005_csproj.lua
index 0c9d33bc..b8e01232 100644
--- a/src/actions/vstudio/vs2005_csproj.lua
+++ b/src/actions/vstudio/vs2005_csproj.lua
@@ -182,6 +182,9 @@
 					if #contents > 0 then
 						_p("%s", contents)
 					end
+					if info.action == "EmbeddedResource" and cfg.customtoolnamespace then
+						_p(3,"<CustomToolNamespace>%s</CustomToolNamespace>", cfg.customtoolnamespace)
+					end
 					_p(2,'</%s>', info.action)
 				else
 					_p(2,'<%s Include="%s" />', info.action, fname)