diff --git a/spring-webflow/src/main/java/org/springframework/webflow/executor/support/ResponseInstructionHandler.java b/spring-webflow/src/main/java/org/springframework/webflow/executor/support/ResponseInstructionHandler.java
index 9c5e3881..d4a7620f 100644
--- a/spring-webflow/src/main/java/org/springframework/webflow/executor/support/ResponseInstructionHandler.java
+++ b/spring-webflow/src/main/java/org/springframework/webflow/executor/support/ResponseInstructionHandler.java
@@ -100,7 +100,7 @@ public abstract class ResponseInstructionHandler {
 		}
 		catch (Exception e) {
 			throw new RuntimeException(
-					"Unexpected exception handling response instruction " + responseInstruction, e); 
+					"Unexpected exception handling response instruction " + responseInstruction + ": " + e); 
 		}
 	}