diff --git a/challenge/dns01/precheck.go b/challenge/dns01/precheck.go
index 00e09854..f65dfb5a 100644
--- a/challenge/dns01/precheck.go
+++ b/challenge/dns01/precheck.go
@@ -1,7 +1,6 @@
 package dns01
 
 import (
-	"errors"
 	"fmt"
 	"net"
 	"strings"
@@ -24,22 +23,6 @@ func WrapPreCheck(wrap WrapPreCheckFunc) ChallengeOption {
 	}
 }
 
-// AddPreCheck Allow to define checks before notifying ACME that the DNS challenge is ready.
-// Deprecated: use WrapPreCheck instead.
-func AddPreCheck(preCheck PreCheckFunc) ChallengeOption {
-	// Prevent race condition
-	check := preCheck
-	return func(chlg *Challenge) error {
-		chlg.preCheck.checkFunc = func(_, fqdn, value string, _ PreCheckFunc) (bool, error) {
-			if check == nil {
-				return false, errors.New("invalid preCheck: preCheck is nil")
-			}
-			return check(fqdn, value)
-		}
-		return nil
-	}
-}
-
 func DisableCompletePropagationRequirement() ChallengeOption {
 	return func(chlg *Challenge) error {
 		chlg.preCheck.requireCompletePropagation = false