diff --git a/spring-webflow/src/main/java/org/springframework/webflow/test/MockViewFactoryCreator.java b/spring-webflow/src/main/java/org/springframework/webflow/test/MockViewFactoryCreator.java
index a17e3c1b..b77c1cdc 100644
--- a/spring-webflow/src/main/java/org/springframework/webflow/test/MockViewFactoryCreator.java
+++ b/spring-webflow/src/main/java/org/springframework/webflow/test/MockViewFactoryCreator.java
@@ -20,6 +20,7 @@ import java.io.IOException;
 import org.springframework.binding.convert.ConversionService;
 import org.springframework.binding.expression.Expression;
 import org.springframework.binding.expression.ExpressionParser;
+import org.springframework.core.style.ToStringCreator;
 import org.springframework.webflow.engine.builder.ViewFactoryCreator;
 import org.springframework.webflow.execution.Event;
 import org.springframework.webflow.execution.RequestContext;
@@ -108,5 +109,9 @@ class MockViewFactoryCreator implements ViewFactoryCreator {
 		public void render() throws IOException {
 			context.getExternalContext().getResponseWriter().write(viewId);
 		}
+
+		public String toString() {
+			return new ToStringCreator(this).append("viewId", viewId).toString();
+		}
 	}
 }
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