diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
index 478c9b78bc..dbbde107db 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2018-2022, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2020-2021, the SerenityOS developers.
  * Copyright (c) 2021-2022, Sam Atkins <atkinssj@serenityos.org>
  * Copyright (c) 2021, Tobias Christiansen <tobyase@serenityos.org>
@@ -5132,27 +5132,6 @@ RefPtr<CSS::Supports> parse_css_supports(CSS::ParsingContext const& context, Str
     return parser.parse_as_supports();
 }
 
-RefPtr<CSS::StyleValue> parse_html_length(DOM::Document const& document, StringView string)
-{
-    if (string.is_null())
-        return nullptr;
-
-    auto integer = string.to_int();
-    if (integer.has_value())
-        return CSS::LengthStyleValue::create(CSS::Length::make_px(integer.value()));
-
-    {
-        // FIXME: This is both ad-hoc and inefficient (note the String allocation!)
-        String string_copy(string);
-        char const* endptr = nullptr;
-        auto double_value = strtod(string_copy.characters(), const_cast<char**>(&endptr));
-        if (endptr != string_copy.characters())
-            return CSS::LengthStyleValue::create(CSS::Length::make_px(double_value));
-    }
-
-    return parse_css_value(CSS::ParsingContext(document), string);
-}
-
 // https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#current-dimension-value
 static RefPtr<CSS::StyleValue> parse_current_dimension_value(float value, Utf8View input, Utf8View::Iterator position)
 {
diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Parser.h b/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
index dd729d08f5..5d1cca99be 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
@@ -358,7 +358,6 @@ RefPtr<CSS::MediaQuery> parse_media_query(CSS::ParsingContext const&, StringView
 NonnullRefPtrVector<CSS::MediaQuery> parse_media_query_list(CSS::ParsingContext const&, StringView);
 RefPtr<CSS::Supports> parse_css_supports(CSS::ParsingContext const&, StringView);
 
-RefPtr<CSS::StyleValue> parse_html_length(DOM::Document const&, StringView);
 RefPtr<CSS::StyleValue> parse_dimension_value(StringView);
 RefPtr<CSS::StyleValue> parse_nonzero_dimension_value(StringView);