diff --git a/CALIBRE_CLI_INSTRUCTIONS.md b/CALIBRE_CLI_INSTRUCTIONS.md
new file mode 100644
index 0000000..d579348
--- /dev/null
+++ b/CALIBRE_CLI_INSTRUCTIONS.md
@@ -0,0 +1,47 @@
+# Using the DeDRM plugin with the Calibre command line interface
+
+If you prefer the Calibre CLI instead of the GUI, follow this guide to
+install and use the DeDRM plugin.
+
+This guide assumes you are on Linux, but it may very well work on other
+platforms.
+
+## Step-by-step Tutorial
+
+#### Install Calibre
+   - Follow [Calibre's installation instructions](https://calibre-ebook.com/download_linux)
+
+#### Install plugins
+  - Download the DeDRM `.zip` archive from DeDRM_tools'
+     [latest release](https://github.com/apprenticeharper/DeDRM_tools/releases/latest).
+     Then unzip it.
+  - Add the DeDRM plugin to Calibre:
+     ```
+     cd *the unzipped DeDRM_tools folder*
+     calibre-customize --add DeDRM_calibre_plugin/DeDRM_plugin.zip
+     ```
+  - Add the Obok plugin:
+    ```
+    calibre-customize --add Obok_calibre_plugin/obok_plugin.zip
+    ```
+
+#### Enter your keys
+  - Figure out what format DeDRM wants your key in by looking in
+     [the code that handles that](src/prefs.py).
+     - For Kindle eInk devices, DeDRM expects you to put a list of serial
+       numbers in the `serials` field: `"serials": ["012345689abcdef"]` or
+       `"serials": ["1111111111111111", "2222222222222222"]`.
+  - Now add your keys to `$CALIBRE_CONFIG_DIRECTORY/plugins/dedrm.json`.
+
+#### Import your books
+  - Make a library folder
+  ```
+  mkdir library
+  ```
+  - Add your book(s) with this command:
+  ```
+  calibredb add /path/to/book.format --with-library=library
+  ```
+
+The DRM should be removed from your book, which you can find in the `library`
+folder.
diff --git a/FAQs.md b/FAQs.md
index 9412ac0..916a76c 100644
--- a/FAQs.md
+++ b/FAQs.md
@@ -180,6 +180,8 @@ The Macintosh DeDRM application creates a log file on your desktop every time it
 ## I cannot solve my problem with the Windows DeDRM application, and now I need to ‘post a log’. How do I do that?
 The Windows DeDRM application creates a log file in your home directory (C:\Users\[username]) every time it is run. After unsuccessfully removing DRM from one ebook, copy the contents of the log file (it is a simple text file) and paste it into your comment at Apprentice Alf's blog or in a new issue at Apprentice Harper's github repository.
 
+## Is there a way to use the DeDRM plugin for Calibre from the command line?
+See the [Calibre command line interface (CLI) instructions](CALIBRE_CLI_INSTRUCTIONS.md).
 
 # General Questions
 
diff --git a/dedrm_src/k4mobidedrm.py b/dedrm_src/k4mobidedrm.py
index 1ce1f35..c6ab3ab 100644
--- a/dedrm_src/k4mobidedrm.py
+++ b/dedrm_src/k4mobidedrm.py
@@ -269,7 +269,7 @@ def decryptBook(infile, outdir, kDatabaseFiles, androidFiles, serials, pids):
         re.match('^{0-9A-F-}{36}$', orig_fn_root)
     ):  # Kindle for PC / Mac / Android / Fire / iOS
         clean_title = cleanup_name(book.getBookTitle())
-        outfilename = '{}_{}'.format(orig_fn_root, clean_title)
+        outfilename = u'{}_{}'.format(orig_fn_root, clean_title)
     else:  # E Ink Kindle, which already uses a reasonable name
         outfilename = orig_fn_root