diff --git a/affinity/src/main/java/net/openhft/affinity/AffinityLock.java b/affinity/src/main/java/net/openhft/affinity/AffinityLock.java
index cf0ed4ca0..1a4a05551 100644
--- a/affinity/src/main/java/net/openhft/affinity/AffinityLock.java
+++ b/affinity/src/main/java/net/openhft/affinity/AffinityLock.java
@@ -456,7 +456,7 @@ protected void finalize() throws Throwable {
     }
 
     /**
-     * @return unique id for this CPI or -1 if not allocated.
+     * @return unique id for this CPU or -1 if not allocated.
      */
     public int cpuId() {
         return cpuId;