diff --git a/Install.ps1 b/Install.ps1
index a7815e5..30a00b6 100644
--- a/Install.ps1
+++ b/Install.ps1
@@ -212,7 +212,7 @@ function Format-LanguageCode {
             $returnCode = 'el'
             break
         }
-        '^fi' {
+        '^fi$' {
             $returnCode = 'fi'
             break
         }