diff --git a/core/api/src/main/java/org/onosproject/ui/table/cell/AppIdFormatter.java b/core/api/src/main/java/org/onosproject/ui/table/cell/AppIdFormatter.java
index f6ccf2c0..42d684b 100644
--- a/core/api/src/main/java/org/onosproject/ui/table/cell/AppIdFormatter.java
+++ b/core/api/src/main/java/org/onosproject/ui/table/cell/AppIdFormatter.java
@@ -23,7 +23,10 @@
 /**
  * Formats an application identifier as "(app-id) : (app-name)".
  */
-public class AppIdFormatter extends AbstractCellFormatter {
+public final class AppIdFormatter extends AbstractCellFormatter {
+
+    // non-instantiable
+    private AppIdFormatter() { }
 
     @Override
     protected String nonNullFormat(Object value) {