diff --git a/support/testing/tests/package/test_octave.py b/support/testing/tests/package/test_octave.py
index 5c0b26a5fd..ef6516939e 100644
--- a/support/testing/tests/package/test_octave.py
+++ b/support/testing/tests/package/test_octave.py
@@ -51,8 +51,7 @@ class TestOctave(infra.basetest.BRTest):
 
         # Check octave can fail
         cmd = self.octave_cmd("assert(false)")
-        _, exit_code = self.emulator.run(cmd)
-        self.assertNotEqual(exit_code, 0)
+        self.assertRunNotOk(cmd)
 
         # Check string output
         string = "Hello World"