diff --git a/pkg/metricshandler/metrics_handler.go b/pkg/metricshandler/metrics_handler.go
index ed31c68bc9..45f6bab558 100644
--- a/pkg/metricshandler/metrics_handler.go
+++ b/pkg/metricshandler/metrics_handler.go
@@ -187,6 +187,7 @@ func (m *MetricsHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 
 	contentType := expfmt.NegotiateIncludingOpenMetrics(r.Header)
 
+        # We do not support protobuf at the moment. Fall back to FmtText if the negotiated exposition format is not FmtOpenMetrics See: https://github.com/kubernetes/kube-state-metrics/issues/2022
 	if contentType != expfmt.FmtOpenMetrics {
 		contentType = expfmt.FmtText
 	}