diff --git a/spring-faces/src/main/java/org/springframework/faces/expression/LegacyJSFELExpressionParser.java b/spring-faces/src/main/java/org/springframework/faces/expression/LegacyJSFELExpressionParser.java
index 2d97ed5b..02e988a1 100644
--- a/spring-faces/src/main/java/org/springframework/faces/expression/LegacyJSFELExpressionParser.java
+++ b/spring-faces/src/main/java/org/springframework/faces/expression/LegacyJSFELExpressionParser.java
@@ -32,7 +32,14 @@ public class LegacyJSFELExpressionParser extends ELExpressionParser {
 	}
 
 	public LegacyJSFELExpressionParser() {
-		this(ExpressionFactory.newInstance());
+		this(getDefaultExpressionFactory());
+	}
+
+	private static ExpressionFactory getDefaultExpressionFactory() {
+		if (!System.getProperties().containsKey("javax.el.ExpressionFactory")) {
+			System.setProperty("javax.el.ExpressionFactory", "org.jboss.el.ExpressionFactoryImpl");
+		}
+		return ExpressionFactory.newInstance();
 	}
 
 	private static class RequestContextELContextFactory implements ELContextFactory {
diff --git a/spring-webflow/src/main/java/org/springframework/webflow/core/expression/el/WebFlowELExpressionParser.java b/spring-webflow/src/main/java/org/springframework/webflow/core/expression/el/WebFlowELExpressionParser.java
index e556444f..feb56d17 100644
--- a/spring-webflow/src/main/java/org/springframework/webflow/core/expression/el/WebFlowELExpressionParser.java
+++ b/spring-webflow/src/main/java/org/springframework/webflow/core/expression/el/WebFlowELExpressionParser.java
@@ -30,7 +30,14 @@ public class WebFlowELExpressionParser extends ELExpressionParser {
 	}
 
 	public WebFlowELExpressionParser() {
-		this(ExpressionFactory.newInstance());
+		this(getDefaultExpressionFactory());
+	}
+
+	private static ExpressionFactory getDefaultExpressionFactory() {
+		if (!System.getProperties().containsKey("javax.el.ExpressionFactory")) {
+			System.setProperty("javax.el.ExpressionFactory", "org.jboss.el.ExpressionFactoryImpl");
+		}
+		return ExpressionFactory.newInstance();
 	}
 
 	private static class RequestContextELContextFactory implements ELContextFactory {
diff --git a/spring-webflow/src/test/java/org/springframework/webflow/config/FlowBuilderServicesBeanDefinitionParserTests.java b/spring-webflow/src/test/java/org/springframework/webflow/config/FlowBuilderServicesBeanDefinitionParserTests.java
new file mode 100644
index 00000000..5da9255b
--- /dev/null
+++ b/spring-webflow/src/test/java/org/springframework/webflow/config/FlowBuilderServicesBeanDefinitionParserTests.java
@@ -0,0 +1,77 @@
+package org.springframework.webflow.config;
+
+import junit.framework.TestCase;
+
+import org.springframework.binding.convert.ConversionException;
+import org.springframework.binding.convert.ConversionExecutor;
+import org.springframework.binding.convert.ConversionService;
+import org.springframework.binding.convert.support.DefaultConversionService;
+import org.springframework.binding.expression.Expression;
+import org.springframework.context.support.ClassPathXmlApplicationContext;
+import org.springframework.core.io.ResourceLoader;
+import org.springframework.webflow.core.expression.el.WebFlowELExpressionParser;
+import org.springframework.webflow.engine.builder.ViewFactoryCreator;
+import org.springframework.webflow.engine.builder.support.FlowBuilderServices;
+import org.springframework.webflow.execution.Action;
+import org.springframework.webflow.execution.ViewFactory;
+import org.springframework.webflow.mvc.MvcViewFactoryCreator;
+
+public class FlowBuilderServicesBeanDefinitionParserTests extends TestCase {
+
+	private ClassPathXmlApplicationContext context;
+	private FlowBuilderServices builderServices;
+
+	public void setUp() {
+		context = new ClassPathXmlApplicationContext("org/springframework/webflow/config/flow-builder-services.xml");
+	}
+
+	public void testFlowBuilderServicesDefaultConfig() {
+		builderServices = (FlowBuilderServices) context.getBean("flowBuilderServicesDefault");
+		assertNotNull(builderServices);
+		assertNotNull(builderServices.getExpressionParser());
+		assertTrue(builderServices.getViewFactoryCreator() instanceof MvcViewFactoryCreator);
+		assertTrue(builderServices.getConversionService() instanceof DefaultConversionService);
+	}
+
+	public void testFlowBuilderServicesCustomized() {
+		builderServices = (FlowBuilderServices) context.getBean("flowBuilderServicesCustom");
+		assertNotNull(builderServices);
+		assertTrue(builderServices.getExpressionParser() instanceof WebFlowELExpressionParser);
+		assertTrue(builderServices.getViewFactoryCreator() instanceof TestViewFactoryCreator);
+		assertTrue(builderServices.getConversionService() instanceof TestConversionService);
+	}
+
+	public static class TestViewFactoryCreator implements ViewFactoryCreator {
+
+		public Action createFinalResponseAction(Expression viewId, ResourceLoader viewResourceLoader) {
+			throw new UnsupportedOperationException("Auto-generated method stub");
+		}
+
+		public ViewFactory createViewFactory(Expression viewId, ResourceLoader viewResourceLoader) {
+			throw new UnsupportedOperationException("Auto-generated method stub");
+		}
+	}
+
+	public static class TestConversionService implements ConversionService {
+
+		public Class getClassByAlias(String alias) throws ConversionException {
+			throw new UnsupportedOperationException("Auto-generated method stub");
+		}
+
+		public ConversionExecutor getConversionExecutor(Class sourceClass, Class targetClass)
+				throws ConversionException {
+			throw new UnsupportedOperationException("Auto-generated method stub");
+		}
+
+		public ConversionExecutor getConversionExecutorByTargetAlias(Class sourceClass, String targetAlias)
+				throws ConversionException {
+			throw new UnsupportedOperationException("Auto-generated method stub");
+		}
+
+		public ConversionExecutor[] getConversionExecutorsForSource(Class sourceClass) throws ConversionException {
+			throw new UnsupportedOperationException("Auto-generated method stub");
+		}
+
+	}
+
+}
diff --git a/spring-webflow/src/test/java/org/springframework/webflow/config/flow-builder-services.xml b/spring-webflow/src/test/java/org/springframework/webflow/config/flow-builder-services.xml
new file mode 100644
index 00000000..baaaa9fc
--- /dev/null
+++ b/spring-webflow/src/test/java/org/springframework/webflow/config/flow-builder-services.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xmlns:web="http://www.springframework.org/schema/webflow-config"
+       xsi:schemaLocation="
+           http://www.springframework.org/schema/beans
+           http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
+           http://www.springframework.org/schema/webflow-config
+           http://www.springframework.org/schema/webflow-config/spring-webflow-config-2.0.xsd">
+	
+	<web:flow-builder-services id="flowBuilderServicesDefault"/>
+	
+	<web:flow-builder-services id="flowBuilderServicesCustom" 
+		expression-parser="customExpressionParser"
+		view-factory-creator="customViewFactoryCreator"
+		conversion-service="customConversionService"/>
+	
+	<bean id="customExpressionParser" class="org.springframework.webflow.core.expression.el.WebFlowELExpressionParser"/>
+	
+	<bean id="customViewFactoryCreator" class="org.springframework.webflow.config.FlowBuilderServicesBeanDefinitionParserTests$TestViewFactoryCreator"/>
+	
+	<bean id="customConversionService" class="org.springframework.webflow.config.FlowBuilderServicesBeanDefinitionParserTests$TestConversionService"/>
+	
+</beans>
\ No newline at end of file