diff --git a/lib/env_check.sh b/lib/env_check.sh
index 41d79a4..10224e9 100644
--- a/lib/env_check.sh
+++ b/lib/env_check.sh
@@ -156,9 +156,20 @@ SYSCTL
 }
 
 env_check_apply_fixes() {
-  (( ENV_CHECK_NEED_PACKAGES == 1 )) && { log_info '正在安装缺失软件包...'; _env_install_packages || return 1; }
-  (( ENV_CHECK_NEED_STORAGE == 1 )) && { log_info '正在创建状态目录...'; mkdir -p "${IPF_STORAGE_DIR}"; chmod 750 "${IPF_STORAGE_DIR}"; }
-  (( ENV_CHECK_NEED_SYSCTL == 1 )) && { log_info '正在写入 sysctl 配置并启用转发...'; _env_write_sysctl || return 1; }
+  if (( ENV_CHECK_NEED_PACKAGES == 1 )); then
+    log_info '正在安装缺失软件包...'
+    _env_install_packages || return 1
+  fi
+  if (( ENV_CHECK_NEED_STORAGE == 1 )); then
+    log_info '正在创建状态目录...'
+    mkdir -p "${IPF_STORAGE_DIR}"
+    chmod 750 "${IPF_STORAGE_DIR}"
+  fi
+  if (( ENV_CHECK_NEED_SYSCTL == 1 )); then
+    log_info '正在写入 sysctl 配置并启用转发...'
+    _env_write_sysctl || return 1
+  fi
+  return 0
 }
 
 env_check_all() {
diff --git a/tests/test_env_check.sh b/tests/test_env_check.sh
index 4e5c2fd..347354a 100755
--- a/tests/test_env_check.sh
+++ b/tests/test_env_check.sh
@@ -126,4 +126,19 @@ export IPF_TEST_INPUTS=$'n\n'
 
 assert_eq '3' "$(status_of env_check_all)" 'env_check_all should return 3 when user rejects autofix'
 
+# Regression: env_check_apply_fixes must return 0 even when the last flag is 0.
+# 之前写成 `(( NEED_SYSCTL == 1 )) && { ... }`，NEED_SYSCTL=0 时函数返回 1，
+# 外层 set -e 直接把脚本打死。
+ENV_CHECK_NEED_PACKAGES=1
+ENV_CHECK_NEED_STORAGE=0
+ENV_CHECK_NEED_SYSCTL=0
+assert_eq '0' "$(status_of env_check_apply_fixes)" \
+  'env_check_apply_fixes should return 0 when only some fixes are needed'
+
+ENV_CHECK_NEED_PACKAGES=0
+ENV_CHECK_NEED_STORAGE=0
+ENV_CHECK_NEED_SYSCTL=0
+assert_eq '0' "$(status_of env_check_apply_fixes)" \
+  'env_check_apply_fixes should return 0 when no fixes are needed'
+
 pass 'test_env_check.sh'