diff --git a/src/app/test-controller/test-controller.component.ts b/src/app/test-controller/test-controller.component.ts
index d147e8a448ca671a29c7e1d8345c71ae2bf38b82..47307ce36cd6a25a89d552d819a71607541f87bb 100644
--- a/src/app/test-controller/test-controller.component.ts
+++ b/src/app/test-controller/test-controller.component.ts
@@ -128,7 +128,7 @@ export class TestControllerComponent implements OnInit, OnDestroy {
           let myUnitAliasClear = myUnitAlias;
           let unitIdSuffix = 1;
           while (this.allUnitIds.indexOf(myUnitAliasClear) > -1) {
-            myUnitAliasClear = myUnitAlias + '%' + unitIdSuffix.toString();
+            myUnitAliasClear = myUnitAlias + '-' + unitIdSuffix.toString();
             unitIdSuffix += 1;
           }
           this.allUnitIds.push(myUnitAliasClear);