diff --git a/autotests/integration/shell_client_test.cpp b/autotests/integration/shell_client_test.cpp
--- a/autotests/integration/shell_client_test.cpp
+++ b/autotests/integration/shell_client_test.cpp
@@ -986,7 +986,9 @@
     QVERIFY(process->waitForStarted());
 
     AbstractClient *killClient = nullptr;
-    QVERIFY(shellClientAddedSpy.wait());
+    if (shellClientAddedSpy.isEmpty()) {
+        QVERIFY(shellClientAddedSpy.wait());
+    }
     killClient = shellClientAddedSpy.first().first().value<AbstractClient*>();
     QSignalSpy unresponsiveSpy(killClient, &AbstractClient::unresponsiveChanged);
     QSignalSpy killedSpy(process.data(), static_cast<void(QProcess::*)(int,QProcess::ExitStatus)>(&QProcess::finished));