diff --git a/pkg/middlewares/forwardedheaders/forwarded_header.go b/pkg/middlewares/forwardedheaders/forwarded_header.go
index 4d796c55d..4bbae8a95 100644
--- a/pkg/middlewares/forwardedheaders/forwarded_header.go
+++ b/pkg/middlewares/forwardedheaders/forwarded_header.go
@@ -132,18 +132,18 @@ func (x *XForwarded) rewrite(outreq *http.Request) {
 
 	xfProto := outreq.Header.Get(xForwardedProto)
 	if xfProto == "" {
-		if outreq.TLS != nil {
-			outreq.Header.Set(xForwardedProto, "https")
+		if isWebsocketRequest(outreq) {
+			if outreq.TLS != nil {
+				outreq.Header.Set(xForwardedProto, "wss")
+			} else {
+				outreq.Header.Set(xForwardedProto, "ws")
+			}
 		} else {
-			outreq.Header.Set(xForwardedProto, "http")
-		}
-	}
-
-	if isWebsocketRequest(outreq) {
-		if outreq.Header.Get(xForwardedProto) == "https" || outreq.Header.Get(xForwardedProto) == "wss" {
-			outreq.Header.Set(xForwardedProto, "wss")
-		} else {
-			outreq.Header.Set(xForwardedProto, "ws")
+			if outreq.TLS != nil {
+				outreq.Header.Set(xForwardedProto, "https")
+			} else {
+				outreq.Header.Set(xForwardedProto, "http")
+			}
 		}
 	}