diff --git a/index.html b/index.html
index 23788f7..2b67770 100644
--- a/index.html
+++ b/index.html
@@ -958,7 +958,7 @@ foreach ($file in $inputfiles) {
             <dt>{</dt><dd>Opens the code block.</dd>
             <dt>$output = [io.path]::ChangeExtension($file, '.mkv')</dt><dd>Sets up the output file: it will be located in the current folder and keep the same filename, but will have an .mkv extension instead of .mp4.</dd>
             <dt>ffmpeg -i $file</dt><dd>Carry out the following ffmpeg command for each input file.<br>
-            <strong>Note</strong>: To call ffmpeg here as just ‘ffmpeg’ (rather than entering the full path to ffmpeg.exe), you must make sure that it's correctly configured. See <a href="http://adaptivesamples.com/how-to-install-ffmpeg-on-windows/">this article</a>, especially the section ‘Add to Path’.</dd>
+            <strong>Note</strong>: To call ffmpeg here as just ‘ffmpeg’ (rather than entering the full path to ffmpeg.exe), you must make sure that it’s correctly configured. See <a href="http://adaptivesamples.com/how-to-install-ffmpeg-on-windows/">this article</a>, especially the section ‘Add to Path’.</dd>
             <dt>-map 0</dt><dd>retain all streams</dd>
             <dt>-c copy</dt><dd>enable stream copy (no re-encode)</dd>
             <dt>$output</dt><dd>The output file is set to the value of the <code>$output</code> variable declared above: i.e., the current file name with an .mkv extension.</dd>