diff --git a/src/main/java/dev/dinauer/monitoring/nodes/client/NodeDiskService.java b/src/main/java/dev/dinauer/monitoring/nodes/client/NodeDiskService.java
index 5446d87..06779af 100644
--- a/src/main/java/dev/dinauer/monitoring/nodes/client/NodeDiskService.java
+++ b/src/main/java/dev/dinauer/monitoring/nodes/client/NodeDiskService.java
@@ -67,6 +67,6 @@ public class NodeDiskService
                 LOG.errorf("Cannot parse metrics line '%s'", line);
             }
         }
-        return new NodeDiskMetrics(Integer.parseInt(result.get("percentage_used")), Long.parseLong(result.get("total-space")));
+        return new NodeDiskMetrics(Integer.parseInt(result.get("percentage-used")), Long.parseLong(result.get("total-space")));
     }
 }