diff --git a/code_style.md b/code_style.md
index e7844b939c..4b2338064c 100644
--- a/code_style.md
+++ b/code_style.md
@@ -22,7 +22,7 @@ number throgh from the original code to the final application.
 General Style
 -------------
 - 4 spaces to indent, for consistency with Matrix Python.
-- 120 columns per line, but try to keep JavaScript code around the 80 column mark.
+- 120 columns per line, but try to keep JavaScript code around the 90 column mark.
   Inline JSX in particular can be nicer with more columns per line.
 - No trailing whitespace at end of lines.
 - Don't indent empty lines.