diff --git a/exporter/prometheusremotewriteexporter/exporter.go b/exporter/prometheusremotewriteexporter/exporter.go
index 260790637048..79491c441b1b 100644
--- a/exporter/prometheusremotewriteexporter/exporter.go
+++ b/exporter/prometheusremotewriteexporter/exporter.go
@@ -332,13 +332,20 @@ func (prwe *prwExporter) execute(ctx context.Context, data []byte) error {
 		req.Header.Add("Content-Encoding", "snappy")
 		req.Header.Set("User-Agent", prwe.userAgentHeader)
 
-		switch prwe.RemoteWriteProtoMsg {
-		case config.RemoteWriteProtoMsgV1:
+		// If feature flag not enabled support only RW1
+		// TODO remove when feature flag removed
+		if !prwe.enableSendingRW2 {
 			req.Header.Set("Content-Type", "application/x-protobuf")
 			req.Header.Set("X-Prometheus-Remote-Write-Version", "0.1.0")
-		case config.RemoteWriteProtoMsgV2:
-			req.Header.Set("Content-Type", "application/x-protobuf;proto=io.prometheus.write.v2.Request")
-			req.Header.Set("X-Prometheus-Remote-Write-Version", "2.0.0")
+		} else {
+			switch prwe.RemoteWriteProtoMsg {
+			case config.RemoteWriteProtoMsgV1:
+				req.Header.Set("Content-Type", "application/x-protobuf")
+				req.Header.Set("X-Prometheus-Remote-Write-Version", "0.1.0")
+			case config.RemoteWriteProtoMsgV2:
+				req.Header.Set("Content-Type", "application/x-protobuf;proto=io.prometheus.write.v2.Request")
+				req.Header.Set("X-Prometheus-Remote-Write-Version", "2.0.0")
+			}
 		}
 
 		resp, err := prwe.client.Do(req)