diff --git a/README.md b/README.md
index e1a9b71..411ac40 100644
--- a/README.md
+++ b/README.md
@@ -41,7 +41,7 @@ pip install mothertongues
 If you just want to try something out you can use the mothertongues command line to create a configuration and some sample data:
 
 1. `poetry run python3 cli.py new-project`
-2. Then run your dictionary: `poetry run python3 cli.py build-and-run <YourDictionaryConfigDirPath>/mtd.config.json`
+2. Then run your dictionary: `poetry run python3 cli.py build-and-run <YourDictionaryConfigDirPath>/config.mtd.json`
 
 ### Local Install
 
diff --git a/docs/guides/build.md b/docs/guides/build.md
index 1e945a5..9c0e27b 100644
--- a/docs/guides/build.md
+++ b/docs/guides/build.md
@@ -20,7 +20,7 @@ structure similar to the one [described in this guide](#file-structure).
 
 Then run:
 
-`mothertongues build-and-run <path_to_mtd.config.json>`
+`mothertongues build-and-run <path_to_config.mtd.json>`
 
 And your dictionary will be served at [http://localhost:3636](http://localhost:3636)
 
@@ -32,7 +32,7 @@ First, you need to export the dictionary data required by any MTD UI.
 2.  Then, build the dictionary using the `mothertongues export` command to create
     necessary data:
 
-`mothertongues export <path_to_mtd.config.json> <output_folder>`
+`mothertongues export <path_to_config.mtd.json> <output_folder>`
 
 
 This will create a file called `dictionary_data.json` which is the file you will need to transfer to your MTD UI in the next section.
diff --git a/docs/guides/prepare.md b/docs/guides/prepare.md
index 78b3749..191a76d 100644
--- a/docs/guides/prepare.md
+++ b/docs/guides/prepare.md
@@ -10,18 +10,18 @@ The most time-intensive part of building your dictionary, depending on how you w
 
 ## Project folder structure
 
-To generate a sample project that you can edit to suit your needs, use the `mothertongues new-project` command. For example `mothertongues new-project --outdir . --name 'DanishDictionary'` will build a folder called 'DanishDictionary in the current directory'. It will include some sample data ('data.xlsx') and a [MTD configuration file](#mtd-language-configuration-file) ('mtd.config.json').
+To generate a sample project that you can edit to suit your needs, use the `mothertongues new-project` command. For example `mothertongues new-project --outdir . --name 'DanishDictionary'` will build a folder called 'DanishDictionary in the current directory'. It will include some sample data ('data.xlsx') and a [MTD configuration file](#mtd-language-configuration-file) ('config.mtd.json').
 
 ```raw
 📦DanishDictionary
  ┣ 📜data.xlsx
- ┗ 📜mtd.config.json
+ ┗ 📜config.mtd.json
 ```
 
 ## MTD Configuration file
 
 !!! tip
-    In the [starter](https://github.com/MotherTongues/mtd-starter), the language configuration file is found here: `mtd-starter/mtd.config.json`
+    In the [starter](https://github.com/MotherTongues/mtd-starter), the language configuration file is found here: `mtd-starter/config.mtd.json`
 
 
 Every dictionary must have a configuration file, which helps define which data belongs to your dictionary and meta data like your dictionary's [alphabet](#customized-alphabet)