diff --git a/Libraries/LibWeb/CSS/Parser/MediaParsing.cpp b/Libraries/LibWeb/CSS/Parser/MediaParsing.cpp
index 579e83ad564..fcadb1a4864 100644
--- a/Libraries/LibWeb/CSS/Parser/MediaParsing.cpp
+++ b/Libraries/LibWeb/CSS/Parser/MediaParsing.cpp
@@ -505,12 +505,7 @@ GC::Ptr<CSSMediaRule> Parser::convert_to_media_rule(AtRule const& rule, Nested n
                     child_rules.append(child_rule);
             },
             [&](Vector<Declaration> const& declarations) {
-                auto* declaration = convert_to_style_declaration(declarations);
-                if (!declaration) {
-                    dbgln_if(CSS_PARSER_DEBUG, "CSSParser: nested declarations invalid; discarding.");
-                    return;
-                }
-                child_rules.append(CSSNestedDeclarations::create(realm(), *declaration));
+                child_rules.append(CSSNestedDeclarations::create(realm(), *convert_to_style_declaration(declarations)));
             });
     }
     auto rule_list = CSSRuleList::create(realm(), child_rules);
diff --git a/Libraries/LibWeb/CSS/Parser/Parser.cpp b/Libraries/LibWeb/CSS/Parser/Parser.cpp
index 3e4d4c00a6e..f54ed099c31 100644
--- a/Libraries/LibWeb/CSS/Parser/Parser.cpp
+++ b/Libraries/LibWeb/CSS/Parser/Parser.cpp
@@ -1493,7 +1493,7 @@ void Parser::extract_property(Declaration const& declaration, PropertiesAndCusto
     }
 }
 
-CSSStyleProperties* Parser::convert_to_style_declaration(Vector<Declaration> const& declarations)
+GC::Ref<CSSStyleProperties> Parser::convert_to_style_declaration(Vector<Declaration> const& declarations)
 {
     PropertiesAndCustomProperties properties;
     PropertiesAndCustomProperties& dest = properties;
diff --git a/Libraries/LibWeb/CSS/Parser/Parser.h b/Libraries/LibWeb/CSS/Parser/Parser.h
index 7c74ac7a938..2c7a350ead3 100644
--- a/Libraries/LibWeb/CSS/Parser/Parser.h
+++ b/Libraries/LibWeb/CSS/Parser/Parser.h
@@ -245,7 +245,7 @@ private:
     GC::Ptr<CSSSupportsRule> convert_to_supports_rule(AtRule const&, Nested);
     GC::Ptr<CSSPropertyRule> convert_to_property_rule(AtRule const& rule);
 
-    CSSStyleProperties* convert_to_style_declaration(Vector<Declaration> const&);
+    GC::Ref<CSSStyleProperties> convert_to_style_declaration(Vector<Declaration> const&);
     Optional<StyleProperty> convert_to_style_property(Declaration const&);
 
     Optional<Dimension> parse_dimension(ComponentValue const&);
diff --git a/Libraries/LibWeb/CSS/Parser/RuleParsing.cpp b/Libraries/LibWeb/CSS/Parser/RuleParsing.cpp
index 883a1bde1d4..b4be2aac584 100644
--- a/Libraries/LibWeb/CSS/Parser/RuleParsing.cpp
+++ b/Libraries/LibWeb/CSS/Parser/RuleParsing.cpp
@@ -103,11 +103,7 @@ GC::Ptr<CSSStyleRule> Parser::convert_to_style_rule(QualifiedRule const& qualifi
     if (nested == Nested::Yes)
         selectors = adapt_nested_relative_selector_list(selectors);
 
-    auto* declaration = convert_to_style_declaration(qualified_rule.declarations);
-    if (!declaration) {
-        dbgln_if(CSS_PARSER_DEBUG, "CSSParser: style rule declaration invalid; discarding.");
-        return {};
-    }
+    auto declaration = convert_to_style_declaration(qualified_rule.declarations);
 
     GC::RootVector<CSSRule*> child_rules { realm().heap() };
     for (auto& child : qualified_rule.child_rules) {
@@ -125,12 +121,7 @@ GC::Ptr<CSSStyleRule> Parser::convert_to_style_rule(QualifiedRule const& qualifi
                 }
             },
             [&](Vector<Declaration> const& declarations) {
-                auto* declaration = convert_to_style_declaration(declarations);
-                if (!declaration) {
-                    dbgln_if(CSS_PARSER_DEBUG, "CSSParser: nested declarations invalid; discarding.");
-                    return;
-                }
-                child_rules.append(CSSNestedDeclarations::create(realm(), *declaration));
+                child_rules.append(CSSNestedDeclarations::create(realm(), *convert_to_style_declaration(declarations)));
             });
     }
     auto nested_rules = CSSRuleList::create(realm(), move(child_rules));
@@ -256,12 +247,7 @@ GC::Ptr<CSSRule> Parser::convert_to_layer_rule(AtRule const& rule, Nested nested
                         child_rules.append(child_rule);
                 },
                 [&](Vector<Declaration> const& declarations) {
-                    auto* declaration = convert_to_style_declaration(declarations);
-                    if (!declaration) {
-                        dbgln_if(CSS_PARSER_DEBUG, "CSSParser: nested declarations invalid; discarding.");
-                        return;
-                    }
-                    child_rules.append(CSSNestedDeclarations::create(realm(), *declaration));
+                    child_rules.append(CSSNestedDeclarations::create(realm(), *convert_to_style_declaration(declarations)));
                 });
         }
         auto rule_list = CSSRuleList::create(realm(), child_rules);
@@ -478,12 +464,7 @@ GC::Ptr<CSSSupportsRule> Parser::convert_to_supports_rule(AtRule const& rule, Ne
                     child_rules.append(child_rule);
             },
             [&](Vector<Declaration> const& declarations) {
-                auto* declaration = convert_to_style_declaration(declarations);
-                if (!declaration) {
-                    dbgln_if(CSS_PARSER_DEBUG, "CSSParser: nested declarations invalid; discarding.");
-                    return;
-                }
-                child_rules.append(CSSNestedDeclarations::create(realm(), *declaration));
+                child_rules.append(CSSNestedDeclarations::create(realm(), *convert_to_style_declaration(declarations)));
             });
     }