diff --git a/Libraries/LibWeb/HTML/Parser/HTMLDocumentParser.cpp b/Libraries/LibWeb/HTML/Parser/HTMLDocumentParser.cpp
index 6e9c2e2f4d5..1927274a73d 100644
--- a/Libraries/LibWeb/HTML/Parser/HTMLDocumentParser.cpp
+++ b/Libraries/LibWeb/HTML/Parser/HTMLDocumentParser.cpp
@@ -113,7 +113,7 @@ static Vector<FlyString> s_quirks_public_ids = {
 RefPtr<DOM::Document> parse_html_document(const StringView& data, const URL& url, const String& encoding)
 {
     auto document = DOM::Document::create(url);
-    HTMLDocumentParser parser(document, data, TextCodec::get_standardized_encoding(encoding));
+    HTMLDocumentParser parser(document, data, encoding);
     parser.run(url);
     return document;
 }
@@ -122,7 +122,7 @@ HTMLDocumentParser::HTMLDocumentParser(DOM::Document& document, const StringView
     : m_tokenizer(input, encoding)
     , m_document(document)
 {
-    m_document->set_encoding(encoding);
+    m_document->set_encoding(TextCodec::get_standardized_encoding(encoding));
 }
 
 HTMLDocumentParser::~HTMLDocumentParser()
diff --git a/Libraries/LibWeb/Loader/FrameLoader.cpp b/Libraries/LibWeb/Loader/FrameLoader.cpp
index 9347521df43..72598378d11 100644
--- a/Libraries/LibWeb/Loader/FrameLoader.cpp
+++ b/Libraries/LibWeb/Loader/FrameLoader.cpp
@@ -260,6 +260,7 @@ void FrameLoader::resource_did_load()
 
     auto document = DOM::Document::create();
     document->set_url(url);
+    document->set_encoding(resource()->encoding());
     document->set_content_type(resource()->mime_type());
 
     frame().set_document(document);