diff --git a/cpp/src/arrow/adapters/orc/adapter.cc b/cpp/src/arrow/adapters/orc/adapter.cc
index 73430af2c2837..bdd594850ddca 100644
--- a/cpp/src/arrow/adapters/orc/adapter.cc
+++ b/cpp/src/arrow/adapters/orc/adapter.cc
@@ -194,11 +194,11 @@ Status CheckTimeZoneDatabaseAvailability() {
   auto conda_prefix = std::getenv("CONDA_PREFIX");
   auto tz_dir_raw = std::getenv("TZDIR");
   std::string tz_dir = conda_prefix != nullptr
-                        ? std::string(conda_prefix) + "/share/zoneinfo"
-                        : std::string(tz_dir_raw != nullptr ? tz_dir_raw : "");
+                           ? std::string(conda_prefix) + "/share/zoneinfo"
+                           : std::string(tz_dir_raw != nullptr ? tz_dir_raw : "");
   bool is_tzdb_available = (!tz_dir.empty())
-                              ? std::filesystem::exists(tz_dir)
-                              : std::filesystem::exists("/usr/share/zoneinfo");
+                               ? std::filesystem::exists(tz_dir)
+                               : std::filesystem::exists("/usr/share/zoneinfo");
   if (!is_tzdb_available) {
     return Status::Invalid(
         "IANA time zone database is unavailable but required by ORC."