diff --git a/web/api/v1/api.go b/web/api/v1/api.go
index 3b81b81f98..8a40afc936 100644
--- a/web/api/v1/api.go
+++ b/web/api/v1/api.go
@@ -838,7 +838,7 @@ func (api *API) respond(w http.ResponseWriter, data interface{}) {
 	w.Header().Set("Content-Type", "application/json")
 	w.WriteHeader(http.StatusOK)
 	if n, err := w.Write(b); err != nil {
-		level.Error(api.logger).Log("msg", "error writing response", "n", n, "err", err)
+		level.Error(api.logger).Log("msg", "error writing response", "bytesWritten", n, "err", err)
 	}
 }
 
@@ -875,7 +875,7 @@ func (api *API) respondError(w http.ResponseWriter, apiErr *apiError, data inter
 	w.Header().Set("Content-Type", "application/json")
 	w.WriteHeader(code)
 	if n, err := w.Write(b); err != nil {
-		level.Error(api.logger).Log("msg", "error writing response", "n", n, "err", err)
+		level.Error(api.logger).Log("msg", "error writing response", "bytesWritten", n, "err", err)
 	}
 }