diff --git a/R/check_outliers.R b/R/check_outliers.R
index 3ea506eec..0e68d1b18 100644
--- a/R/check_outliers.R
+++ b/R/check_outliers.R
@@ -903,6 +903,7 @@ check_outliers.data.frame <- function(x,
   valid <- method
   if("optics" %in% valid) {
     valid <- c(valid, "optics_xi")
+    method <- c(method, "optics_xi")
   }
   thresholds <- thresholds[names(thresholds) %in% valid]