diff --git a/.gitattributes b/.gitattributes
index b6c4fac7a28..112752d1ba1 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -19,6 +19,7 @@ tests/language/multiline_strings_test.dart -text
 tests/lib/convert/json_pretty_test.dart -text
 tests/lib/mirrors/method_mirror_source_line_ending_cr.dart -text
 tests/lib/mirrors/method_mirror_source_line_ending_crlf.dart -text
+tests/lib/mirrors/method_mirror_source_line_ending_lf.dart -text
 pkg/js_ast/test/printer_callback_test.dart -text
 
 # Files to leave alone and not diff.