diff --git a/CHANGES.txt b/CHANGES.txt
index d4c80e20..a64cc71b 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -39,6 +39,7 @@
 * Added external files and virtual paths for C# projects (James Whitworth)
 * Added ReleaseRuntime build flag (Tarmo Pikaro)
 * Added Component, Form, and UserControl build actions
+* Added usingdirs() to specify C++/CLI additional using directories (João Matos / triton)
 
 
 -------
diff --git a/src/_premake_init.lua b/src/_premake_init.lua
index bc04c23c..340c0b17 100644
--- a/src/_premake_init.lua
+++ b/src/_premake_init.lua
@@ -609,6 +609,13 @@
 		},
 	}
 
+ 	api.register {
+		name = "usingdirs",
+		scope = "config",
+		kind = "directory-list",
+		tokens = true,
+	}	
+
 	api.register {
 		name = "uuid",
 		scope = "project",
diff --git a/src/actions/vstudio/vs2010_vcxproj.lua b/src/actions/vstudio/vs2010_vcxproj.lua
index b0075ec9..ee05f6bc 100644
--- a/src/actions/vstudio/vs2010_vcxproj.lua
+++ b/src/actions/vstudio/vs2010_vcxproj.lua
@@ -286,6 +286,7 @@
 		"basicRuntimeChecks",
 		"clCompilePreprocessorDefinitions",
 		"clCompileAdditionalIncludeDirectories",
+		"clCompileAdditionalUsingDirectories",
 		"forceIncludes",
 		"debugInformationFormat",
 		"programDataBaseFileName",
@@ -657,6 +658,14 @@
 		end
 	end
 
+	function vc2010.additionalUsingDirectories(cfg)
+		if #cfg.usingdirs > 0 then
+			local dirs = project.getrelative(cfg.project, cfg.usingdirs)
+			dirs = path.translate(table.concat(dirs, ";"))
+			_x(3,'<AdditionalUsingDirectories>%s;%%(AdditionalUsingDirectories)</AdditionalUsingDirectories>', dirs)
+		end
+	end	
+
 
 	function vc2010.additionalCompileOptions(cfg, condition)
 		if #cfg.buildoptions > 0 then
@@ -697,6 +706,10 @@
 		vc2010.additionalIncludeDirectories(cfg, cfg.includedirs)
 	end
 
+	function vc2010.clCompileAdditionalUsingDirectories(cfg)
+		vc2010.additionalUsingDirectories(cfg, cfg.usingdirs)
+	end	
+
 
 	function vc2010.clCompilePreprocessorDefinitions(cfg)
 		vc2010.preprocessorDefinitions(cfg, cfg.defines, false)
diff --git a/tests/actions/vstudio/vc2010/test_compile_settings.lua b/tests/actions/vstudio/vc2010/test_compile_settings.lua
index 75cb83c0..dfc55f76 100644
--- a/tests/actions/vstudio/vc2010/test_compile_settings.lua
+++ b/tests/actions/vstudio/vc2010/test_compile_settings.lua
@@ -268,6 +268,22 @@
 		]]
 	end
 
+
+--
+-- If include directories are specified, the <AdditionalUsingDirectories> should be added.
+--
+
+	function suite.additionalUsingDirs_onUsingDirs()
+		usingdirs { "include/lua", "include/zlib" }
+		prepare()
+		test.capture [[
+		<ClCompile>
+			<PrecompiledHeader>NotUsing</PrecompiledHeader>
+			<WarningLevel>Level3</WarningLevel>
+			<AdditionalUsingDirectories>include\lua;include\zlib;%(AdditionalUsingDirectories)</AdditionalUsingDirectories>
+		]]
+	end	
+
 --
 -- Turn off minimal rebuilds if the NoMinimalRebuild flag is set.
 --