diff --git a/PlexCleaner/Language.cs b/PlexCleaner/Language.cs
index 555d2362..743c5b7a 100644
--- a/PlexCleaner/Language.cs
+++ b/PlexCleaner/Language.cs
@@ -118,10 +118,10 @@ public static bool IsMatch(string prefix, string language)
         return false;
     }
 
-    public static bool IsMatch(string prefix, IEnumerable<string> languages)
+    public static bool IsMatch(string language, IEnumerable<string> prefixList)
     {
-        // Match prefix with any of the languages
-        return languages.Any(item => IsMatch(prefix, item));
+        // Match language with any of the prefixes
+        return prefixList.Any(prefix => IsMatch(prefix, language));
     }
 
     public static List<string> GetLanguageList(IEnumerable<TrackInfo> tracks)
diff --git a/PlexCleanerTests/LanguageTests.cs b/PlexCleanerTests/LanguageTests.cs
index 82b93d05..1bd77ff9 100644
--- a/PlexCleanerTests/LanguageTests.cs
+++ b/PlexCleanerTests/LanguageTests.cs
@@ -23,6 +23,9 @@ public void Convert_Language_Tags(string tag, string ietf)
 
     [Theory]
     [InlineData("en", "en")]
+    [InlineData("en", "en-US")]
+    [InlineData("en", "en-GB")]
+    [InlineData("en-GB", "en-GB")]
     [InlineData("zh", "zh-Hant")]
     public void Match_Language_Tags(string prefix, string tag)
     {