diff --git a/zk/CPU_architecture.md b/zk/CPU_architecture.md
index e8cb65f..da3a91e 100644
--- a/zk/CPU_architecture.md
+++ b/zk/CPU_architecture.md
@@ -34,7 +34,7 @@ work faster, which is what is important. Because their memory capacity is so
 small, we measure the size of registers in bits rather than bytes.
 
 In terms of speed, registers sit at the top part of the overall
-[memory hierarchy](./The_memory_hierarchy.md).
+[memory hierarchy](The_memory_hierarchy.md).
 
 There are five main types of register in the CPU: