diff --git a/presubmit_canned_checks.py b/presubmit_canned_checks.py
index 7e01cb8900..95112505aa 100644
--- a/presubmit_canned_checks.py
+++ b/presubmit_canned_checks.py
@@ -529,6 +529,7 @@ def CheckLongLines(input_api, output_api, maxlen, source_file_filter=None):
   ]
 
   def no_long_lines(file_extension, line):
+    """Returns True if the line length is okay."""
     # Check for language specific exceptions.
     if any(file_extension in exts and line.lstrip().startswith(exceptions)
            for exts, exceptions in LANGUAGE_EXCEPTIONS):
@@ -548,6 +549,9 @@ def CheckLongLines(input_api, output_api, maxlen, source_file_filter=None):
     if any((url in line) for url in ('file://', 'http://', 'https://')):
       return True
 
+    if 'presubmit: ignore-long-line' in line:
+      return True
+
     if line_len > extra_maxlen:
       return False