diff --git a/docs/reference/search/aggregations/metrics/cardinality-aggregation.asciidoc b/docs/reference/search/aggregations/metrics/cardinality-aggregation.asciidoc
index 588fd24a8c1..71f7a4ea9bd 100644
--- a/docs/reference/search/aggregations/metrics/cardinality-aggregation.asciidoc
+++ b/docs/reference/search/aggregations/metrics/cardinality-aggregation.asciidoc
@@ -86,7 +86,7 @@ image:images/cardinality_error.png[]
 
 For all 3 thresholds, counts have been accurate up to the configured threshold
 (although not guaranteed, this is likely to be the case). Please also note that
-even with a threshold as low as 100, the error remains under under 5%, even when
+even with a threshold as low as 100, the error remains under 5%, even when
 counting millions of items.
 
 ==== Pre-computed hashes