diff --git a/src/engine/gameManager/ZoneManager.java b/src/engine/gameManager/ZoneManager.java
index 25b3e2b7..cc92ac21 100644
--- a/src/engine/gameManager/ZoneManager.java
+++ b/src/engine/gameManager/ZoneManager.java
@@ -458,7 +458,7 @@ public enum ZoneManager {
 
         // Seafloor
 
-        if (zone.parent == null)
+        if (ZoneManager.seaFloor.equals(zone))
             return worldAlttitude;
 
         // Children of seafloor