diff --git a/Userland/Libraries/LibWeb/IndexedDB/IDBRequest.cpp b/Userland/Libraries/LibWeb/IndexedDB/IDBRequest.cpp
index aeadb43745..513fc73081 100644
--- a/Userland/Libraries/LibWeb/IndexedDB/IDBRequest.cpp
+++ b/Userland/Libraries/LibWeb/IndexedDB/IDBRequest.cpp
@@ -39,4 +39,16 @@ WebIDL::CallbackType* IDBRequest::onsuccess()
     return event_handler_attribute(HTML::EventNames::success);
 }
 
+// https://w3c.github.io/IndexedDB/#dom-idbrequest-onerror
+void IDBRequest::set_onerror(WebIDL::CallbackType* event_handler)
+{
+    set_event_handler_attribute(HTML::EventNames::error, event_handler);
+}
+
+// https://w3c.github.io/IndexedDB/#dom-idbrequest-onerror
+WebIDL::CallbackType* IDBRequest::onerror()
+{
+    return event_handler_attribute(HTML::EventNames::error);
+}
+
 }
diff --git a/Userland/Libraries/LibWeb/IndexedDB/IDBRequest.h b/Userland/Libraries/LibWeb/IndexedDB/IDBRequest.h
index 858933c5fd..4c44991fc5 100644
--- a/Userland/Libraries/LibWeb/IndexedDB/IDBRequest.h
+++ b/Userland/Libraries/LibWeb/IndexedDB/IDBRequest.h
@@ -20,6 +20,8 @@ public:
 
     void set_onsuccess(WebIDL::CallbackType*);
     WebIDL::CallbackType* onsuccess();
+    void set_onerror(WebIDL::CallbackType*);
+    WebIDL::CallbackType* onerror();
 
 protected:
     explicit IDBRequest(JS::Realm&);
diff --git a/Userland/Libraries/LibWeb/IndexedDB/IDBRequest.idl b/Userland/Libraries/LibWeb/IndexedDB/IDBRequest.idl
index 934fb4ed62..808aa8867b 100644
--- a/Userland/Libraries/LibWeb/IndexedDB/IDBRequest.idl
+++ b/Userland/Libraries/LibWeb/IndexedDB/IDBRequest.idl
@@ -11,7 +11,7 @@ interface IDBRequest : EventTarget {
 
     // Event handlers:
     attribute EventHandler onsuccess;
-    [FIXME] attribute EventHandler onerror;
+    attribute EventHandler onerror;
 };
 
 enum IDBRequestReadyState {