diff --git a/src/qgcunittest/MultiSignalSpy.cc b/src/qgcunittest/MultiSignalSpy.cc
index 1699dad43900109b6d7d7e2a5daa03d4c8f37b94..4cebd834785cd2f20b527f8318b37a7d46f2fbd6 100644
--- a/src/qgcunittest/MultiSignalSpy.cc
+++ b/src/qgcunittest/MultiSignalSpy.cc
@@ -218,7 +218,7 @@ bool MultiSignalSpy::waitForSignalByIndex(
     Q_ASSERT(spy);
     
     while (spy->count() == 0 && !_timeout) {
-        QCoreApplication::processEvents(QEventLoop::AllEvents | QEventLoop::WaitForMoreEvents);
+        QCoreApplication::processEvents(QEventLoop::AllEvents | QEventLoop::WaitForMoreEvents, 500);
     }
     
     // Clean up and return status