diff --git a/core/src/main/java/org/springframework/ws/transport/http/AbstractHttpSenderConnection.java b/core/src/main/java/org/springframework/ws/transport/http/AbstractHttpSenderConnection.java
index d1dba63a..6b5d0902 100644
--- a/core/src/main/java/org/springframework/ws/transport/http/AbstractHttpSenderConnection.java
+++ b/core/src/main/java/org/springframework/ws/transport/http/AbstractHttpSenderConnection.java
@@ -61,7 +61,7 @@ public abstract class AbstractHttpSenderConnection extends AbstractSenderConnect
         long contentLength = getResponseContentLength();
         if (contentLength < 0) {
             if (responseBuffer == null) {
-                responseBuffer = FileCopyUtils.copyToByteArray(getResponseInputStream());
+                responseBuffer = FileCopyUtils.copyToByteArray(getRawResponseInputStream());
             }
             contentLength = responseBuffer.length;
         }
@@ -98,6 +98,7 @@ public abstract class AbstractHttpSenderConnection extends AbstractSenderConnect
     /** Returns the length of the response. */
     protected abstract long getResponseContentLength() throws IOException;
 
+    /** Returns the raw, possibly compressed input stream to read the response from. */
     protected abstract InputStream getRawResponseInputStream() throws IOException;
 
     /*
diff --git a/core/src/test/java/org/springframework/ws/transport/http/AbstractHttpWebServiceMessageSenderIntegrationTestCase.java b/core/src/test/java/org/springframework/ws/transport/http/AbstractHttpWebServiceMessageSenderIntegrationTestCase.java
index 7116df8f..20267265 100644
--- a/core/src/test/java/org/springframework/ws/transport/http/AbstractHttpWebServiceMessageSenderIntegrationTestCase.java
+++ b/core/src/test/java/org/springframework/ws/transport/http/AbstractHttpWebServiceMessageSenderIntegrationTestCase.java
@@ -133,6 +133,14 @@ public abstract class AbstractHttpWebServiceMessageSenderIntegrationTestCase ext
         validateResponse(servlet);
     }
 
+    public void testSendAndReceiveCompressedInvalidContentSize() throws Exception {
+        MyServlet servlet = new MyServlet();
+        servlet.setResponse(true);
+        servlet.setGzip(true);
+        servlet.setContentLength(-1);
+        validateResponse(servlet);
+    }
+
     public void testSendAndReceiveFault() throws Exception {
         MyServlet servlet = new MyServlet();
         servlet.setResponseStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);