diff --git a/zk/Relation_between_kernel_and_CPU.md b/zk/Relation_between_kernel_and_CPU.md
index ba6dcb8..046c7a3 100644
--- a/zk/Relation_between_kernel_and_CPU.md
+++ b/zk/Relation_between_kernel_and_CPU.md
@@ -1,8 +1,8 @@
 ---
 tags:
-  - kernel
   - CPU
   - computer-architecture
+  - operating-systems
 ---
 
 # Relation between the kernel and CPU