diff --git a/src/test/cpp/asyncappendertestcase.cpp b/src/test/cpp/asyncappendertestcase.cpp
index 8c2183714..bffa5e73a 100644
--- a/src/test/cpp/asyncappendertestcase.cpp
+++ b/src/test/cpp/asyncappendertestcase.cpp
@@ -309,7 +309,7 @@ class AsyncAppenderTestCase : public AppenderSkeletonTestCase
 			asyncAppender->setErrorHandler(errorHandler);
 
 			LOG4CXX_INFO(root, "Message");
-			std::this_thread::sleep_for( std::chrono::milliseconds( 10 ) );
+			std::this_thread::sleep_for( std::chrono::milliseconds( 30 ) );
 			LOGUNIT_ASSERT(errorHandler->errorReported());
 			LOG4CXX_INFO(root, "Message");
 			auto& v = vectorAppender->getVector();