| diff --git a/numpy/core/tests/test_multiarray.py b/numpy/core/tests/test_multiarray.py |
| index bd8c51a..47ac291 100644 |
| --- a/numpy/core/tests/test_multiarray.py |
| +++ b/numpy/core/tests/test_multiarray.py |
| @@ -5042,7 +5042,7 @@ class TestIO: |
| """Test workarounds for 32-bit limited fwrite, fseek, and ftell |
| calls in windows. These normally would hang doing something like this. |
| See http://projects.scipy.org/numpy/ticket/1660""" |
| - if sys.platform != 'win32': |
| + if sys.platform != 'win32' or "MSYSTEM" in os.environ: |
| return |
| try: |
| # before workarounds, only up to 2**32-1 worked |
