diff --git a/artiq/test/coredevice/portability.py b/artiq/test/coredevice/portability.py
index 32ba1e74c..cf8c8ccf0 100644
--- a/artiq/test/coredevice/portability.py
+++ b/artiq/test/coredevice/portability.py
@@ -142,7 +142,7 @@ class _Exceptions(EnvExperiment):
                     raise _MyException
                 elif i == 2:
                     raise IndexError
-            except (TypeError, IndexError):
+            except IndexError:
                 self.trace.append(101)
                 raise
             except: