diff --git a/Makefile b/Makefile
index 3bbafbd..8f31b2e 100644
--- a/Makefile
+++ b/Makefile
@@ -7,10 +7,10 @@ TARGET_DIR := target
 # 创建目标目录
 $(TARGET_DIR):
 	@mkdir -p $(TARGET_DIR)/linux/amd64
-	@mkdir -p $(TARGET_DIR)/linux/arm64
+	# @mkdir -p $(TARGET_DIR)/linux/arm64
 	@mkdir -p $(TARGET_DIR)/windows/amd64
 	@mkdir -p $(TARGET_DIR)/darwin/amd64
-	@mkdir -p $(TARGET_DIR)/darwin/arm64
+	# @mkdir -p $(TARGET_DIR)/darwin/arm64
 
 # 默认构建
 build: $(TARGET_DIR)
@@ -31,7 +31,7 @@ test:
 build-all: clean test $(TARGET_DIR)
 	@echo "Building for all platforms..."
 	GOOS=linux GOARCH=amd64 go build -o $(TARGET_DIR)/linux/amd64/$(BINARY)
-	GOOS=linux GOARCH=arm64 go build -o $(TARGET_DIR)/linux/arm64/$(BINARY)
+	# GOOS=linux GOARCH=arm64 go build -o $(TARGET_DIR)/linux/arm64/$(BINARY)
 	GOOS=windows GOARCH=amd64 go build -o $(TARGET_DIR)/windows/amd64/$(BINARY).exe
-	GOOS=darwin GOARCH=amd64 go build -o $(TARGET_DIR)/darwin/amd64/$(BINARY)
-	GOOS=darwin GOARCH=arm64 go build -o $(TARGET_DIR)/darwin/arm64/$(BINARY)
\ No newline at end of file
+	# GOOS=darwin GOARCH=amd64 go build -o $(TARGET_DIR)/darwin/amd64/$(BINARY)
+	# GOOS=darwin GOARCH=arm64 go build -o $(TARGET_DIR)/darwin/arm64/$(BINARY)
\ No newline at end of file
diff --git a/rule.go b/rule.go
index cdaf06c..afd4413 100644
--- a/rule.go
+++ b/rule.go
@@ -181,6 +181,9 @@ func matchPort(port int, pattern string) bool {
 
 // 字符串转整数辅助函数
 func atoi(s string) (int, error) {
+	if s == "" {
+		return 0, fmt.Errorf("empty string")
+	}
 	var res int
 	for _, c := range s {
 		if c < '0' || c > '9' {