diff --git a/lib/enumerator.h b/lib/enumerator.h
index daeb477f2c..7c5ff5d9f0 100644
--- a/lib/enumerator.h
+++ b/lib/enumerator.h
@@ -60,6 +60,7 @@ class EnumeratorHandle {
 
     reference operator*() const;
     const EnumeratorHandle<T> &operator++();
+    bool operator==(const EnumeratorHandle<T> &other) const;
     bool operator!=(const EnumeratorHandle<T> &other) const;
 };
 
@@ -630,6 +631,11 @@ const EnumeratorHandle<T> &EnumeratorHandle<T>::operator++() {
     return *this;
 }
 
+template <typename T>
+bool EnumeratorHandle<T>::operator==(const EnumeratorHandle<T> &other) const {
+    return !(*this != other);
+}
+
 template <typename T>
 bool EnumeratorHandle<T>::operator!=(const EnumeratorHandle<T> &other) const {
     if (this->enumerator == other.enumerator) return true;