diff --git a/v2/pkg/runner/runner.go b/v2/pkg/runner/runner.go
index d9a6fe28e..5b0407a90 100644
--- a/v2/pkg/runner/runner.go
+++ b/v2/pkg/runner/runner.go
@@ -114,7 +114,7 @@ func (r *Runner) EnumerateMultipleDomainsWithCtx(ctx context.Context, reader io.
 	scanner := bufio.NewScanner(reader)
 	ip, _ := regexp.Compile(`^([0-9\.]+$)`)
 	for scanner.Scan() {
-		domain, err := sanitize(scanner.Text())
+		domain, err := normalizeLowercase(scanner.Text())
 		isIp := ip.MatchString(domain)
 		if errors.Is(err, ErrEmptyInput) || (r.options.ExcludeIps && isIp) {
 			continue
diff --git a/v2/pkg/runner/util.go b/v2/pkg/runner/util.go
index 2507e8972..cc883cc82 100644
--- a/v2/pkg/runner/util.go
+++ b/v2/pkg/runner/util.go
@@ -5,7 +5,7 @@ import (
 
 	"github.com/pkg/errors"
 
-	"github.com/projectdiscovery/utils/file"
+	fileutil "github.com/projectdiscovery/utils/file"
 )
 
 var (
@@ -30,9 +30,14 @@ func loadFromFile(file string) ([]string, error) {
 }
 
 func sanitize(data string) (string, error) {
-	data = strings.Trim(data, "\n\t\"' ")
+	data = strings.Trim(data, "\n\t\"'` ")
 	if data == "" {
 		return "", ErrEmptyInput
 	}
 	return data, nil
 }
+
+func normalizeLowercase(s string) (string, error) {
+	data, err := sanitize(s)
+	return strings.ToLower(data), err
+}