diff --git a/thirdparty/ansistrm/ansistrm.py b/thirdparty/ansistrm/ansistrm.py
index eb30b9c6d..95d2b00be 100644
--- a/thirdparty/ansistrm/ansistrm.py
+++ b/thirdparty/ansistrm/ansistrm.py
@@ -62,6 +62,8 @@ class ColorizingStreamHandler(logging.StreamHandler):
             self.flush()
         except (KeyboardInterrupt, SystemExit):
             raise
+        except IOError:
+            pass
         except:
             self.handleError(record)