diff --git a/sysfs.hpp b/sysfs.hpp
index 690cf77..8f09e03 100644
--- a/sysfs.hpp
+++ b/sysfs.hpp
@@ -17,10 +17,10 @@
     s << val;
 }
 
-inline const std::string make_sysfs_path(const std::string& path,
-        const std::string& type,
-        const std::string& id,
-        const std::string& entry)
+inline std::string make_sysfs_path(const std::string& path,
+                                   const std::string& type,
+                                   const std::string& id,
+                                   const std::string& entry)
 {
     using namespace std::literals;