diff --git a/Kernel/FileSystem/ProcFS.cpp b/Kernel/FileSystem/ProcFS.cpp
index 659dd19fc9..2f154871bd 100644
--- a/Kernel/FileSystem/ProcFS.cpp
+++ b/Kernel/FileSystem/ProcFS.cpp
@@ -749,7 +749,7 @@ Optional<KBuffer> procfs$df(InodeIdentifier)
         if (fs.is_file_backed())
             fs_object.add("source", static_cast<const FileBackedFS&>(fs).file_description().absolute_path());
         else
-            fs_object.add("source", fs.class_name());
+            fs_object.add("source", "none");
     });
     array.finish();
     return builder.build();