From 5cd67e7d2336816ad7029f93566667a8caab5d7f Mon Sep 17 00:00:00 2001
From: Niels Lohmann <mail@nlohmann.me>
Date: Wed, 20 Oct 2021 15:03:50 +0200
Subject: [PATCH] :alembic: use proper header for filesystem

---
 test/src/unit-regression2.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/test/src/unit-regression2.cpp b/test/src/unit-regression2.cpp
index 807e27f14..fb8b268c6 100644
--- a/test/src/unit-regression2.cpp
+++ b/test/src/unit-regression2.cpp
@@ -69,6 +69,7 @@ using ordered_json = nlohmann::ordered_json;
     #endif
 #endif
 
+#ifdef JSON_STD_FILESYSTEM_EXPERIMENTAL
 #if JSON_STD_FILESYSTEM_EXPERIMENTAL
 #include <experimental/filesystem>
 namespace nlohmann::detail
@@ -83,6 +84,7 @@ namespace std_fs = std::filesystem;
 } // namespace nlohmann::detail
 #endif
 #endif
+#endif
 
 #ifdef JSON_HAS_CPP_20
     #include <span>