diff --git a/README.md b/README.md
index 99e7f8cf5f6e2b50263ff3a7e4767aafaff23ed1..70d89c7d0dd66f3982c42df69fde662796c8894d 100644
--- a/README.md
+++ b/README.md
@@ -77,7 +77,7 @@ the `gh-pages` branch of their lesson website.  To do this:
    filters for Pandoc:
 
     ~~~
-    pip install pandocfilters
+    $ pip install pandocfilters
     ~~~
 
 3. To convert Markdown files into HTML pages in the root directory, go