diff --git a/crates/nu-command/tests/commands/open.rs b/crates/nu-command/tests/commands/open.rs
index 18e4dc5b8b..f8153bec39 100644
--- a/crates/nu-command/tests/commands/open.rs
+++ b/crates/nu-command/tests/commands/open.rs
@@ -391,6 +391,10 @@ fn test_content_types_with_open_raw() {
         assert!(result.out.contains("application/json"));
         let result = nu!(cwd: dirs.formats(), "open --raw sample.ini | metadata");
         assert!(result.out.contains("text/plain"));
+        let result = nu!(cwd: dirs.formats(), "open --raw sample_data.xlsx | metadata");
+        assert!(result
+            .out
+            .contains("vnd.openxmlformats-officedocument"));
         let result = nu!(cwd: dirs.formats(), "open --raw sample_def.nu | metadata");
         assert!(!result.out.contains("content_type"));
         let result = nu!(cwd: dirs.formats(), "open --raw sample.eml | metadata");