diff --git a/hadoop-hdds/framework/src/main/java/org/apache/hadoop/hdds/fs/DedicatedDiskSpaceUsage.java b/hadoop-hdds/framework/src/main/java/org/apache/hadoop/hdds/fs/DedicatedDiskSpaceUsage.java
index d0c2cd239612..601ffedff017 100644
--- a/hadoop-hdds/framework/src/main/java/org/apache/hadoop/hdds/fs/DedicatedDiskSpaceUsage.java
+++ b/hadoop-hdds/framework/src/main/java/org/apache/hadoop/hdds/fs/DedicatedDiskSpaceUsage.java
@@ -51,7 +51,7 @@ public long getUsedSpace() {
    * @return used space
    */
   private long calculateUsedSpace() {
-    return getCapacity() - getFile().getFreeSpace();
+    return getCapacity() - getFile().getUsableSpace();
   }
 
 }