diff --git a/modules/ui/src/app/pages/testrun/testrun.component.html b/modules/ui/src/app/pages/testrun/testrun.component.html
index 890378f12..028f109db 100644
--- a/modules/ui/src/app/pages/testrun/testrun.component.html
+++ b/modules/ui/src/app/pages/testrun/testrun.component.html
@@ -96,7 +96,9 @@ <h2 class="title progress-title">
       aria-label="Start new testrun"
       color="primary"
       [disabled]="
-        hasDevices === false || isTestrunInProgress(systemStatus?.status)
+        hasDevices === false ||
+        isTestrunInProgress(systemStatus?.status) ||
+        systemStatus?.status === StatusOfTestrun.Cancelling
       "
       (click)="openTestRunModal()"
       mat-flat-button>
diff --git a/modules/ui/src/app/pages/testrun/testrun.component.spec.ts b/modules/ui/src/app/pages/testrun/testrun.component.spec.ts
index 0605254ce..873212f72 100644
--- a/modules/ui/src/app/pages/testrun/testrun.component.spec.ts
+++ b/modules/ui/src/app/pages/testrun/testrun.component.spec.ts
@@ -480,6 +480,25 @@ describe('TestrunComponent', () => {
       });
     });
 
+    describe('with available systemStatus$ data, as Cancelling', () => {
+      beforeEach(() => {
+        store.overrideSelector(
+          selectSystemStatus,
+          MOCK_PROGRESS_DATA_CANCELLING
+        );
+        store.overrideSelector(selectHasDevices, true);
+        fixture.detectChanges();
+      });
+
+      it('should have disabled "Start" button', () => {
+        const startBtn = compiled.querySelector(
+          '.start-button'
+        ) as HTMLButtonElement;
+
+        expect(startBtn.disabled).toBeTrue();
+      });
+    });
+
     describe('with available systemStatus$ data, as Monitoring', () => {
       beforeEach(() => {
         store.overrideSelector(