diff --git a/ext/reflection/php_reflection.c b/ext/reflection/php_reflection.c
index 64cdc053f76..a2832358d6b 100644
--- a/ext/reflection/php_reflection.c
+++ b/ext/reflection/php_reflection.c
@@ -4751,7 +4751,7 @@ ZEND_METHOD(ReflectionClass, isInstantiable)
 		RETURN_THROWS();
 	}
 	GET_REFLECTION_OBJECT_PTR(ce);
-	if (ce->ce_flags & (ZEND_ACC_INTERFACE | ZEND_ACC_TRAIT | ZEND_ACC_EXPLICIT_ABSTRACT_CLASS | ZEND_ACC_IMPLICIT_ABSTRACT_CLASS)) {
+	if (ce->ce_flags & (ZEND_ACC_INTERFACE | ZEND_ACC_TRAIT | ZEND_ACC_EXPLICIT_ABSTRACT_CLASS | ZEND_ACC_IMPLICIT_ABSTRACT_CLASS | ZEND_ACC_ENUM)) {
 		RETURN_FALSE;
 	}
 
@@ -4776,7 +4776,7 @@ ZEND_METHOD(ReflectionClass, isCloneable)
 		RETURN_THROWS();
 	}
 	GET_REFLECTION_OBJECT_PTR(ce);
-	if (ce->ce_flags & (ZEND_ACC_INTERFACE | ZEND_ACC_TRAIT | ZEND_ACC_EXPLICIT_ABSTRACT_CLASS | ZEND_ACC_IMPLICIT_ABSTRACT_CLASS)) {
+	if (ce->ce_flags & (ZEND_ACC_INTERFACE | ZEND_ACC_TRAIT | ZEND_ACC_EXPLICIT_ABSTRACT_CLASS | ZEND_ACC_IMPLICIT_ABSTRACT_CLASS | ZEND_ACC_ENUM)) {
 		RETURN_FALSE;
 	}
 	if (!Z_ISUNDEF(intern->obj)) {
diff --git a/ext/reflection/tests/bug81681.phpt b/ext/reflection/tests/bug81681.phpt
new file mode 100644
index 00000000000..6b1c2278163
--- /dev/null
+++ b/ext/reflection/tests/bug81681.phpt
@@ -0,0 +1,18 @@
+--TEST--
+Bug #81681 (ReflectionEnum throwing exceptions)
+--FILE--
+<?php
+enum Status
+{
+    case Draft;
+    case Published;
+    case Archived;
+}
+
+$reflectionEnum = new \ReflectionEnum('\Status');
+var_dump($reflectionEnum->isInstantiable());
+var_dump($reflectionEnum->isCloneable());
+?>
+--EXPECT--
+bool(false)
+bool(false)