diff --git a/spring-web/src/main/java/org/springframework/web/filter/ShallowEtagHeaderFilter.java b/spring-web/src/main/java/org/springframework/web/filter/ShallowEtagHeaderFilter.java
index 4b47dd3c76..9d9f5a88aa 100644
--- a/spring-web/src/main/java/org/springframework/web/filter/ShallowEtagHeaderFilter.java
+++ b/spring-web/src/main/java/org/springframework/web/filter/ShallowEtagHeaderFilter.java
@@ -94,7 +94,7 @@ public class ShallowEtagHeaderFilter extends OncePerRequestFilter {
 	private void updateResponse(HttpServletRequest request, HttpServletResponse response) throws IOException {
 		ContentCachingResponseWrapper responseWrapper =
 				WebUtils.getNativeResponse(response, ContentCachingResponseWrapper.class);
-		Assert.notNull(responseWrapper, "ShallowEtagResponseWrapper not found");
+		Assert.notNull(responseWrapper, "ContentCachingResponseWrapper not found");
 		HttpServletResponse rawResponse = (HttpServletResponse) responseWrapper.getResponse();
 		int statusCode = responseWrapper.getStatusCode();