diff --git a/src/bin_foreign_document_test.rs b/src/bin_foreign_document_test.rs
index 75261e6c..c9477efd 100644
--- a/src/bin_foreign_document_test.rs
+++ b/src/bin_foreign_document_test.rs
@@ -107,7 +107,7 @@ fn compare_group<N: Into<String>, F: Fn() -> I, I: Iterator<Item = TestConfig>>(
 
 fn compare_all_org_document<P: AsRef<Path>>(root_dir: P) -> impl Iterator<Item = TestConfig> {
     let root_dir = root_dir.as_ref();
-    let test_files = WalkDir::new(root_dir)
+    let mut test_files = WalkDir::new(root_dir)
         .into_iter()
         .filter(|e| match e {
             Ok(dir_entry) => {
@@ -121,6 +121,7 @@ fn compare_all_org_document<P: AsRef<Path>>(root_dir: P) -> impl Iterator<Item =
         })
         .collect::<Result<Vec<_>, _>>()
         .unwrap();
+    test_files.sort_by_cached_key(|test_file| PathBuf::from(test_file.path()));
     let test_configs: Vec<_> = test_files
         .into_iter()
         .map(|test_file| {