diff --git a/src/client_side.cc b/src/client_side.cc
index 839b0b8..f1548bb 100644
--- a/src/client_side.cc
+++ b/src/client_side.cc
@@ -3975,7 +3975,8 @@ ConnStateData::finishDechunkingRequest(bool withSuccess)
         if (withSuccess) {
             Must(myPipe->bodySizeKnown());
             ClientSocketContext::Pointer context = getCurrentContext();
-            if (context != NULL && context->http && context->http->request)
+            if (context != NULL && context->http && context->http->request &&
+                clientIsContentLengthValid(context->http->request))
                 context->http->request->setContentLength(myPipe->bodySize());
         }
     }