diff --git a/cmd/main.go b/cmd/main.go
index 1aa8eda..61bc926 100644
--- a/cmd/main.go
+++ b/cmd/main.go
@@ -121,7 +121,7 @@ func main() {
 		}
 		matchIndices := make([]reg.Match, 0)
 		if matchNumFlagEnabled {
-			tmp, err := reg.FindNthMatch(regComp, test_str, *matchNum)
+			tmp, err := regComp.FindNthMatch(test_str, *matchNum)
 			if err == nil {
 				matchIndices = append(matchIndices, tmp)
 			}