diff --git a/crowdin.yml b/crowdin.yml
index ca88314c0..283979fdb 100644
--- a/crowdin.yml
+++ b/crowdin.yml
@@ -2,27 +2,27 @@ files:
   - source: "/Essentials/src/messages.properties"
     translation: "/Essentials/src/messages_%locale_with_underscore%.properties"
     languages_mapping:
-      locale_with_underscore:
-        cs-CZ: cs
-        da-DK: da
-        de-DE: de
-        el-GR: el
+      locale_with_underscore: # right side is xx[_YY] of messages_xx[_YY].properties, left is language code from https://support.crowdin.com/api/language-codes/
+        cs: cs
+        da: da
+        de: de
+        el: el
         en-US: en
         es-ES: es
-        fi-FI: fi
-        fr-FR: fr
-        hu-HU: hu
-        it-IT: it
-        ko-KR: ko
-        nl-NL: nl
-        no-NO: "no" # no is a YAML keyword
-        pl-PL: pl
+        fi: fi
+        fr: fr
+        hu: hu
+        it: it
+        ko: ko
+        nl: nl
+        "no": "no" # no is a YAML keyword
+        pl: pl
         pt-PT: pt
-        ro-RO: ro
-        ru-RU: ru
-        sr-SP: sr
+        ro: ro
+        ru: ru
+        sr: sr
         sv-SE: sv
-        tr-TR: tr
-        uk-UA: uk
-        vi-VN: vi
+        tr: tr
+        uk: uk
+        vi: vi
         zh-CN: zh