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-rw-r--r--pygments/lexer.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/pygments/lexer.py b/pygments/lexer.py
index 25d36e08..709587d7 100644
--- a/pygments/lexer.py
+++ b/pygments/lexer.py
@@ -101,7 +101,7 @@ class Lexer(object):
Add a new stream filter to this lexer.
"""
if not isinstance(filter_, Filter):
- filter = get_filter_by_name(filter_, **options)
+ filter_ = get_filter_by_name(filter_, **options)
self.filters.append(filter_)
def analyse_text(text):