diff --git a/README.md b/README.md
index f94da07..c4d5264 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 [![Build Status](https://travis-ci.org/vmchale/ats-vim.svg?branch=master)](https://travis-ci.org/vmchale/ats-vim)
 
-<img alt="Screenshot of syntastic error highlighting" src=https://github.com/vmchale/ats-vim/raw/master/screenshot.png>
+<img width=40% alt="Screenshot of syntastic error highlighting" src=https://github.com/vmchale/ats-vim/raw/master/screenshot.png>
 
 This provides detection and syntax highlighting for ATS. It can also optionally
 format output with [ats-format](https://github.com/vmchale/ats-format/).