diff --git a/scripts/test_runner.py b/scripts/test_runner.py
index d655a41..983de9c 100755
--- a/scripts/test_runner.py
+++ b/scripts/test_runner.py
@@ -30,12 +30,13 @@
         self.simulator_cmd = simulator_cmd
         self.buffer = io.StringIO()
         self.child = None
+        self.termination_strings = ["main returned", "Exception occurred"]
 
     def run(self, timeout=1000):
         """ Run the simulation command and quit the simulation."""
         self.child = pexpect.spawn(self.simulator_cmd, encoding='utf-8')
         self.child.logfile = self.buffer
-        self.child.expect("main returned", timeout=timeout)
+        self.child.expect(self.termination_strings, timeout=timeout)
         self.child.send("\nq\n")
         self.child.expect(pexpect.EOF, timeout=timeout)
         self.child.close()
@@ -116,7 +117,8 @@
     simulator = simulator_class(simulator_path, args.elf)
     output = simulator.run(timeout=args.timeout)
     print(output)
-    if "FAILED" in output:
+    failure_strings = ["FAILED", "Exception occurred"]
+    if any(x in output for x in failure_strings):
         sys.exit(1)