diff --git a/02-patch-config.sh b/02-patch-config.sh
index 2bfcd15..44cabf6 100755
--- a/02-patch-config.sh
+++ b/02-patch-config.sh
@@ -135,7 +135,8 @@ path = sys.argv[1]
 with open(path) as f:
     content = f.read()
 
-content = re.sub(r'(\benable:\s*)\S+', r'\1aws', content)
+# 只替换 object: 块下的 enable: 字段，避免误改 prometheus/ratelimiter/circuitBreaker 的布尔值
+content = re.sub(r'(^object:.*?\n  enable:\s*)\S+', r'\1aws', content, count=1, flags=re.MULTILINE | re.DOTALL)
 
 endpoint_line = ""
 endpoint_val = "${OPENIM_AWS_ENDPOINT:-}"