diff --git a/rules/ruleset.go b/rules/ruleset.go
index 9fdb63d..f364d7e 100644
--- a/rules/ruleset.go
+++ b/rules/ruleset.go
@@ -74,8 +74,7 @@ func (m *MatchMode) UnmarshalYAML(unmarshal func(interface{}) error) error {
 }
 
 func parseMatchMode(value string) (MatchMode, error) {
-	mode := MatchMode(value)
-	switch mode {
+	switch mode := MatchMode(value); mode {
 	case ForwardMatch, ReverseMatch:
 		return mode, nil
 	default: