diff --git a/promql/quantile.go b/promql/quantile.go
index 7a010a567..6fef2c4f6 100644
--- a/promql/quantile.go
+++ b/promql/quantile.go
@@ -173,7 +173,7 @@ func ensureMonotonic(buckets buckets) {
 	}
 }
 
-// qauntile calculates the given quantile of a vector of samples.
+// quantile calculates the given quantile of a vector of samples.
 //
 // The Vector will be sorted.
 // If 'values' has zero elements, NaN is returned.