diff --git a/Libraries/LibTextCodec/Decoder.cpp b/Libraries/LibTextCodec/Decoder.cpp
index 3ce651ade5..afcb8cd6ee 100644
--- a/Libraries/LibTextCodec/Decoder.cpp
+++ b/Libraries/LibTextCodec/Decoder.cpp
@@ -46,14 +46,14 @@ static UTF8Decoder& utf8_decoder()
     return *decoder;
 }
 
-Decoder* decoder_for(const String& encoding)
+Decoder* decoder_for(const String& a_encoding)
 {
-    ASSERT(is_standardized_encoding(encoding));
+    auto encoding = get_standardized_encoding(a_encoding);
     if (encoding.equals_ignoring_case("windows-1252"))
         return &latin1_decoder();
     if (encoding.equals_ignoring_case("utf-8"))
         return &utf8_decoder();
-    dbg() << "TextCodec: No decoder implemented for encoding '" << encoding << "'";
+    dbgln("TextCodec: No decoder implemented for encoding '{}'", a_encoding);
     return nullptr;
 }