diff --git a/org.springframework.integration/src/test/java/org/springframework/integration/config/publishSubscribeChannelParserTests.xml b/org.springframework.integration/src/test/java/org/springframework/integration/config/publishSubscribeChannelParserTests.xml
index eff640280f..2d448e84b5 100644
--- a/org.springframework.integration/src/test/java/org/springframework/integration/config/publishSubscribeChannelParserTests.xml
+++ b/org.springframework.integration/src/test/java/org/springframework/integration/config/publishSubscribeChannelParserTests.xml
@@ -15,7 +15,7 @@
 
 	<publish-subscribe-channel id="channelWithErrorHandler" error-handler="testErrorHandler"/>
 
-	<thread-pool-task-executor id="pool"/>
+	<thread-pool-task-executor id="pool" max-size="1"/>
 
 	<beans:bean id="testErrorHandler" class="org.springframework.integration.config.TestErrorHandler"/>
 
diff --git a/org.springframework.integration/src/test/java/org/springframework/integration/endpoint/pollingEndpointErrorHandlingTests.xml b/org.springframework.integration/src/test/java/org/springframework/integration/endpoint/pollingEndpointErrorHandlingTests.xml
index ed0ffe8f44..9c83b1d3b8 100644
--- a/org.springframework.integration/src/test/java/org/springframework/integration/endpoint/pollingEndpointErrorHandlingTests.xml
+++ b/org.springframework.integration/src/test/java/org/springframework/integration/endpoint/pollingEndpointErrorHandlingTests.xml
@@ -15,6 +15,6 @@
 		<property name="taskExecutor" ref="taskExecutor" />
 	</bean>
 
-	<si:thread-pool-task-executor id="taskExecutor" core-size="1" rejection-policy="CALLER_RUNS"/>
+	<si:thread-pool-task-executor id="taskExecutor" core-size="1" max-size="5" rejection-policy="CALLER_RUNS"/>
 
 </beans>