diff --git a/Userland/Libraries/LibJS/MarkupGenerator.cpp b/Userland/Libraries/LibJS/MarkupGenerator.cpp
index 616de9a8605..6a5d5c776dc 100644
--- a/Userland/Libraries/LibJS/MarkupGenerator.cpp
+++ b/Userland/Libraries/LibJS/MarkupGenerator.cpp
@@ -11,6 +11,7 @@
 #include <LibJS/MarkupGenerator.h>
 #include <LibJS/Runtime/Array.h>
 #include <LibJS/Runtime/Date.h>
+#include <LibJS/Runtime/DatePrototype.h>
 #include <LibJS/Runtime/Error.h>
 #include <LibJS/Runtime/Object.h>
 #include <LibJS/Runtime/VM.h>
@@ -141,7 +142,7 @@ void MarkupGenerator::function_to_html(const Object& function, StringBuilder& ht
 
 void MarkupGenerator::date_to_html(const Object& date, StringBuilder& html_output, HashTable<Object*>&)
 {
-    html_output.appendff("Date {}", static_cast<const JS::Date&>(date).string());
+    html_output.appendff("Date {}", JS::to_date_string(static_cast<JS::Date const&>(date).date_value()));
 }
 
 void MarkupGenerator::error_to_html(const Object& object, StringBuilder& html_output, HashTable<Object*>&)
diff --git a/Userland/Utilities/js.cpp b/Userland/Utilities/js.cpp
index 0fae2e8abf4..be9b825450f 100644
--- a/Userland/Utilities/js.cpp
+++ b/Userland/Utilities/js.cpp
@@ -27,6 +27,7 @@
 #include <LibJS/Runtime/BooleanObject.h>
 #include <LibJS/Runtime/DataView.h>
 #include <LibJS/Runtime/Date.h>
+#include <LibJS/Runtime/DatePrototype.h>
 #include <LibJS/Runtime/ECMAScriptFunctionObject.h>
 #include <LibJS/Runtime/Error.h>
 #include <LibJS/Runtime/FunctionObject.h>
@@ -311,7 +312,7 @@ static void print_function(JS::Object const& object, HashTable<JS::Object*>&)
 static void print_date(JS::Object const& object, HashTable<JS::Object*>&)
 {
     print_type("Date");
-    js_out(" \033[34;1m{}\033[0m", static_cast<JS::Date const&>(object).string());
+    js_out(" \033[34;1m{}\033[0m", JS::to_date_string(static_cast<JS::Date const&>(object).date_value()));
 }
 
 static void print_error(JS::Object const& object, HashTable<JS::Object*>& seen_objects)