diff --git a/src/duplicacy_webdavstorage.go b/src/duplicacy_webdavstorage.go
index c8e9501..176145d 100644
--- a/src/duplicacy_webdavstorage.go
+++ b/src/duplicacy_webdavstorage.go
@@ -151,6 +151,10 @@ func (storage *WebDAVStorage) sendRequest(method string, uri string, depth int,
 			request.Header.Set(key, value)
 		}
 
+		if method == "PUT" {
+			request.ContentLength = int64(len(data))
+		}
+
 		//requestDump, err := httputil.DumpRequest(request, true)
 		//LOG_INFO("debug", "Request: %s", requestDump)