diff --git a/arch/powerpc/mm/dump_linuxpagetables.c b/arch/powerpc/mm/dump_linuxpagetables.c
index a5b8c16c3d690fbdd5fbb9b06998ad1eebc97777..d659345a98d66c03a2cab1ceed3526af95551cc6 100644
--- a/arch/powerpc/mm/dump_linuxpagetables.c
+++ b/arch/powerpc/mm/dump_linuxpagetables.c
@@ -513,7 +513,7 @@ static int ptdump_init(void)
 
 	populate_markers();
 	build_pgtable_complete_mask();
-	debugfs_file = debugfs_create_file("kernel_pagetables", 0400, NULL,
+	debugfs_file = debugfs_create_file("kernel_page_tables", 0400, NULL,
 			NULL, &ptdump_fops);
 	return debugfs_file ? 0 : -ENOMEM;
 }