diff --git a/source/paint/detail/image_jpeg.hpp b/source/paint/detail/image_jpeg.hpp
index 2ae4b953..1f19373b 100644
--- a/source/paint/detail/image_jpeg.hpp
+++ b/source/paint/detail/image_jpeg.hpp
@@ -47,7 +47,7 @@ namespace nana
 				}
 			}
 		public:
-			bool open(const experimental::filesystem::path& jpeg_file) override
+			bool open(const std::experimental::filesystem::path& jpeg_file) override
 			{
 				auto fp = ::fopen(to_osmbstr(to_utf8(jpeg_file.native())).c_str(), "rb");
 				if(nullptr == fp) return false;