diff --git a/tests/test_uname.rs b/tests/test_uname.rs
index b9504b7fc..65883ccfc 100644
--- a/tests/test_uname.rs
+++ b/tests/test_uname.rs
@@ -15,3 +15,13 @@ fn test_uname_name() {
     let result = ucmd.arg("-n").run();
     assert!(result.success);
 }
+
+#[test]
+fn test_uname_kernel() {
+    let (_, mut ucmd) = at_and_ucmd!();
+
+    let result = ucmd.arg("-o").run();
+    assert!(result.success);
+    #[cfg(target_os = "linux")]
+    assert!(result.stdout.to_lowercase().contains("linux"));
+}