diff --git a/api/src/domain/misc_types.rs b/api/src/domain/misc_types.rs
index 31f293a..0fa57cb 100644
--- a/api/src/domain/misc_types.rs
+++ b/api/src/domain/misc_types.rs
@@ -29,9 +29,9 @@ impl FromStr for Lang {
     type Err = ();
 
     fn from_str(s: &str) -> Result<Self, Self::Err> {
-        match s {
-            "Rus" | "rus" => Ok(Lang::Rus),
-            "Eng" | "eng" => Ok(Lang::Eng),
+        match &s.to_lowercase()[..] {
+            "rus" => Ok(Lang::Rus),
+            "eng" => Ok(Lang::Eng),
             _ => Err(()),
         }
     }