diff --git a/Part3/09_memory/kernel/kernel.c b/Part3/09_memory/kernel/kernel.c
index f55a8bc..0cdab7b 100644
--- a/Part3/09_memory/kernel/kernel.c
+++ b/Part3/09_memory/kernel/kernel.c
@@ -157,7 +157,7 @@
 node* print_holes(node* umem_head) {
     if (umem_head == NULL) {
         kprint("Holes list is Empty");
-        return;
+        return NULL;
     }
     u32 hole_ids = 0;
     node *hole = NULL;
diff --git a/Part3/09_memory/kernel/kernel.h b/Part3/09_memory/kernel/kernel.h
index 9bb23d8..472129d 100644
--- a/Part3/09_memory/kernel/kernel.h
+++ b/Part3/09_memory/kernel/kernel.h
@@ -10,7 +10,7 @@
 #include "../libc/linked.h"
 
 void user_input(char *input);
-void print_holes(node *enum_head);
+node* print_holes(node *enum_head);
 int digit_len(unsigned digit);
 int digit_conver(const char *str);