diff --git a/vaadin-spring-tests/test-spring-security-fusion/src/test/java/com/vaadin/flow/spring/fusionsecurity/SecurityIT.java b/vaadin-spring-tests/test-spring-security-fusion/src/test/java/com/vaadin/flow/spring/fusionsecurity/SecurityIT.java
index 785a68501..caaf115ba 100644
--- a/vaadin-spring-tests/test-spring-security-fusion/src/test/java/com/vaadin/flow/spring/fusionsecurity/SecurityIT.java
+++ b/vaadin-spring-tests/test-spring-security-fusion/src/test/java/com/vaadin/flow/spring/fusionsecurity/SecurityIT.java
@@ -329,8 +329,10 @@ protected void refresh() {
     }
 
     private void assertForbiddenPage() {
-        assertPageContains(
-                "There was an unexpected error (type=Forbidden, status=403).");
+        String source = getDriver().getPageSource();
+        Assert.assertTrue(source.contains(
+                "There was an unexpected error (type=Forbidden, status=403).")
+                || source.contains("HTTP Status 403"));
     }
 
     private void assertPageContains(String contents) {