diff --git a/src/main/java/net/openhft/chronicle/hash/impl/VanillaChronicleHash.java b/src/main/java/net/openhft/chronicle/hash/impl/VanillaChronicleHash.java
index 6ef86df9e..2fd7fb0be 100644
--- a/src/main/java/net/openhft/chronicle/hash/impl/VanillaChronicleHash.java
+++ b/src/main/java/net/openhft/chronicle/hash/impl/VanillaChronicleHash.java
@@ -478,9 +478,9 @@ public abstract class VanillaChronicleHash<K,
         }
     }
 
-    private void zeroOutNewlyMappedTier(BytesStore bytesStore, long segmentOffset) {
+    private void zeroOutNewlyMappedTier(BytesStore bytesStore, long tierOffset) {
         // Zero out hash lookup, tier data and free list bit set. Leave entry space.
-        bytesStore.zeroOut(segmentOffset, segmentOffset + tierSize - tierEntrySpaceOuterSize);
+        bytesStore.zeroOut(tierOffset, tierOffset + tierSize - tierEntrySpaceOuterSize);
     }
 
     private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException {