diff --git a/spring-webflow/changelog.txt b/spring-webflow/changelog.txt
index 6c6fc873..9e5ec8dd 100644
--- a/spring-webflow/changelog.txt
+++ b/spring-webflow/changelog.txt
@@ -15,6 +15,8 @@ Package org.springframework.webflow.executor
 * Statics on FlowFacesUtils are now public: they're supposed to be well known names.
 * FlowPhaseListener.cleanupResources() is now protected.
 * Added AutowiringFlowExecutionListener (SWF-746).
+* In a JSF 1.2 environment, SWF will now correctly maintain the "java.faces.ViewState" parameter accross flow
+  execution redirects (SWF-445).
 
 Changes in version 1.0.5 (03.10.2007)
 -------------------------------------
diff --git a/spring-webflow/src/main/java/org/springframework/webflow/executor/jsf/JsfArgumentHandler.java b/spring-webflow/src/main/java/org/springframework/webflow/executor/jsf/JsfArgumentHandler.java
new file mode 100644
index 00000000..b10d711b
--- /dev/null
+++ b/spring-webflow/src/main/java/org/springframework/webflow/executor/jsf/JsfArgumentHandler.java
@@ -0,0 +1,46 @@
+package org.springframework.webflow.executor.jsf;
+
+import org.springframework.webflow.context.ExternalContext;
+import org.springframework.webflow.execution.FlowExecutionContext;
+import org.springframework.webflow.executor.support.RequestParameterFlowExecutorArgumentHandler;
+
+/**
+ * JSF specific argument handler that ensures the JSF 1.2 "javax.faces.ViewState" parameter is maintained accross flow
+ * execution redirects. Note that this argument handler does not rely on JSF 1.2 specific APIs, so it can be used safely
+ * in a JSF 1.1 environment.
+ * <p>
+ * Maintaining the "javax.faces.ViewState" parameter is important because JSF uses it to tell whether or not a request
+ * is a postback. If the request is a postback, the JSF {@link javax.faces.application.StateManager} will be used to
+ * restore the JSF component states in the view, otherwise state is lost. The actual value of the parameter is not
+ * defined by the JSF specification.
+ * <p>
+ * Note that the "javax.faces.ViewState" parameter will only be added to
+ * {@link #createFlowExecutionUrl(String, FlowExecutionContext, ExternalContext) flow execution URLs}. It doesn't make
+ * sense to add it to
+ * {@link #createFlowDefinitionUrl(org.springframework.webflow.execution.support.FlowDefinitionRedirect, ExternalContext) flow definition URLs}
+ * or
+ * {@link #createExternalUrl(org.springframework.webflow.execution.support.ExternalRedirect, String, ExternalContext) external URLs},
+ * since we're clearly not in a postback situation in those cases.
+ * 
+ * @since 1.0.6
+ * 
+ * @author Erwin Vervaet
+ * @author Mike Seghers
+ */
+public class JsfArgumentHandler extends RequestParameterFlowExecutorArgumentHandler {
+
+	// the ViewState parameter as defined by ResponseStateManager.VIEW_STATE_PARAM in JSF 1.2
+	private static final String VIEW_STATE_PARAM = "javax.faces.ViewState";
+
+	public String createFlowExecutionUrl(String flowExecutionKey, FlowExecutionContext flowExecution,
+			ExternalContext context) {
+		StringBuffer url = new StringBuffer(super.createFlowExecutionUrl(flowExecutionKey, flowExecution, context));
+		String viewStateParam = context.getRequestParameterMap().get(VIEW_STATE_PARAM);
+		if (viewStateParam != null) {
+			url.append('&'); // the flow execution key is already there
+			appendQueryParameter(url, VIEW_STATE_PARAM, viewStateParam);
+		}
+		return url.toString();
+	}
+
+}