diff --git a/core/src/main/java/hudson/diagnosis/OldDataMonitor.java b/core/src/main/java/hudson/diagnosis/OldDataMonitor.java
index 1c871df8df..6bbeed6cf5 100644
--- a/core/src/main/java/hudson/diagnosis/OldDataMonitor.java
+++ b/core/src/main/java/hudson/diagnosis/OldDataMonitor.java
@@ -272,9 +272,9 @@ public class OldDataMonitor extends AdministrativeMonitor {
          * @return True if the major version# differs or the minor# differs by ≥ threshold
          */
         public boolean isOld(int threshold) {
-            return currentVersion != null && min != null && (currentVersion.digit(0) > min.digit(0)
-                    || (currentVersion.digit(0) == min.digit(0)
-                    && currentVersion.digit(1) - min.digit(1) >= threshold));
+            return currentVersion != null && min != null && (currentVersion.getDigitAt(0) > min.getDigitAt(0)
+                    || (currentVersion.getDigitAt(0) == min.getDigitAt(0)
+                    && currentVersion.getDigitAt(1) - min.getDigitAt(1) >= threshold));
         }
 
     }