diff --git a/Libraries/LibWeb/CSS/Parser/PropertyParsing.cpp b/Libraries/LibWeb/CSS/Parser/PropertyParsing.cpp
index 2f3b73b40a7..030b10ef298 100644
--- a/Libraries/LibWeb/CSS/Parser/PropertyParsing.cpp
+++ b/Libraries/LibWeb/CSS/Parser/PropertyParsing.cpp
@@ -3822,15 +3822,15 @@ RefPtr<CSSStyleValue> Parser::parse_transition_value(TokenStream<ComponentValue>
                 continue;
             }
 
-            if (tokens.next_token().is(Token::Type::Ident)) {
+            if (auto transition_property = parse_custom_ident_value(tokens, { { "none"sv } })) {
                 if (transition.property_name) {
                     dbgln_if(CSS_PARSER_DEBUG, "Transition property has multiple property identifiers");
                     return {};
                 }
 
-                auto ident = tokens.consume_a_token().token().ident();
-                if (auto property = property_id_from_string(ident); property.has_value())
-                    transition.property_name = CustomIdentStyleValue::create(ident);
+                auto custom_ident = transition_property->custom_ident();
+                if (auto property = property_id_from_string(custom_ident); property.has_value())
+                    transition.property_name = CustomIdentStyleValue::create(custom_ident);
 
                 continue;
             }
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/css-transitions/parsing/transition-invalid.txt b/Tests/LibWeb/Text/expected/wpt-import/css/css-transitions/parsing/transition-invalid.txt
index 92f21699808..15c778a49e2 100644
--- a/Tests/LibWeb/Text/expected/wpt-import/css/css-transitions/parsing/transition-invalid.txt
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/css-transitions/parsing/transition-invalid.txt
@@ -2,10 +2,9 @@ Harness status: OK
 
 Found 5 tests
 
-3 Pass
-2 Fail
+5 Pass
 Pass	e.style['transition'] = "1s 2s 3s" should not set the property value
 Pass	e.style['transition'] = "-1s -2s" should not set the property value
 Pass	e.style['transition'] = "steps(1) steps(2)" should not set the property value
-Fail	e.style['transition'] = "none top" should not set the property value
-Fail	e.style['transition'] = "initial 1s" should not set the property value
\ No newline at end of file
+Pass	e.style['transition'] = "none top" should not set the property value
+Pass	e.style['transition'] = "initial 1s" should not set the property value
\ No newline at end of file