diff --git a/doc/man/mkvmerge.xml b/doc/man/mkvmerge.xml
index 16fba1a9e..2b4c66259 100644
--- a/doc/man/mkvmerge.xml
+++ b/doc/man/mkvmerge.xml
@@ -566,7 +566,7 @@ $ mkvmerge -o full.mkv file1.mkv +file2.mkv
    </varlistentry>
 
    <varlistentry>
-    <term><option>+</option></term>
+    <term><option>=</option></term>
     <listitem>
      <para>
       Normally mkvmerge looks for files in the same directory as an input file that have the same base name and only differ in their running