diff --git a/src/lint/linter/ArcanistTextLinter.php b/src/lint/linter/ArcanistTextLinter.php
--- a/src/lint/linter/ArcanistTextLinter.php
+++ b/src/lint/linter/ArcanistTextLinter.php
@@ -73,6 +73,7 @@
       self::LINT_TRAILING_WHITESPACE => ArcanistLintSeverity::SEVERITY_AUTOFIX,
       self::LINT_BOF_WHITESPACE      => ArcanistLintSeverity::SEVERITY_AUTOFIX,
       self::LINT_EOF_WHITESPACE      => ArcanistLintSeverity::SEVERITY_AUTOFIX,
+      self::LINT_BAD_CHARSET         => ArcanistLintSeverity::SEVERITY_WARNING,
     );
   }
 
diff --git a/src/lint/linter/__tests__/text/bad-charset.lint-test b/src/lint/linter/__tests__/text/bad-charset.lint-test
--- a/src/lint/linter/__tests__/text/bad-charset.lint-test
+++ b/src/lint/linter/__tests__/text/bad-charset.lint-test
@@ -1,3 +1,3 @@
 ❤♎☀★☂♞
 ~~~~~~~~~~
-error:1:1
+warning:1:1