diff --git a/source/filesystem/filesystem.cpp b/source/filesystem/filesystem.cpp
index fc68a885..63795147 100644
--- a/source/filesystem/filesystem.cpp
+++ b/source/filesystem/filesystem.cpp
@@ -59,12 +59,12 @@ namespace nana {	namespace experimental {	namespace filesystem
 					path2_(path2)
 			{}
 
-			const path& filesystem_error::path1() const
+			const path& filesystem_error::path1() const noexcept
 			{
 				return path1_;
 			}
 
-			const path&filesystem_error::path2() const
+			const path& filesystem_error::path2() const noexcept
 			{
 				return path2_;
 			}