diff --git a/sysfs.hpp b/sysfs.hpp
index e3090c3..3bcca53 100644
--- a/sysfs.hpp
+++ b/sysfs.hpp
@@ -14,6 +14,10 @@
 {
     using namespace std::literals;
 
+    if (entry.empty()) {
+        return path + "/"s + type + id;
+    }
+
     return path + "/"s + type + id + "_"s + entry;
 }