diff --git a/pkg/api/util/names.go b/pkg/api/util/names.go
index 3208e32c0..5a2de69be 100644
--- a/pkg/api/util/names.go
+++ b/pkg/api/util/names.go
@@ -21,8 +21,9 @@ import (
 	"fmt"
 	"hash/fnv"
 
+	"regexp"
+
 	cmapi "github.com/jetstack/cert-manager/pkg/apis/certmanager/v1alpha2"
-	"gopkg.in/src-d/enry.v1/regex"
 )
 
 func ComputeCertificateRequestName(crt *cmapi.Certificate) (string, error) {
@@ -42,7 +43,7 @@ func ComputeCertificateRequestName(crt *cmapi.Certificate) (string, error) {
 		// shorten the cert name to 52 chars to ensure the total length of the name
 		// also shorten the 52 char string to the last non-symbol character
 		// is less than or equal to 64 characters
-		validCharIndexes := regex.MustCompile(`[a-zA-Z\d]`).FindAllStringIndex(fmt.Sprintf("%.52s", crt.Name), -1)
+		validCharIndexes := regexp.MustCompile(`[a-zA-Z\d]`).FindAllStringIndex(fmt.Sprintf("%.52s", crt.Name), -1)
 		crt.Name = crt.Name[:validCharIndexes[len(validCharIndexes)-1][1]]
 	}