diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index d2fa420..9ab97ce 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -195,7 +195,7 @@
 
 static int show_map(struct seq_file *m, void *v)
 {
-	return show_map_internal(m, v, 0);
+	return show_map_internal(m, v, NULL);
 }
 
 static void smaps_pte_range(struct vm_area_struct *vma, pmd_t *pmd,