diff --git a/NEWS b/NEWS
index 285bf4e23a80d..dc464b1abecab 100644
--- a/NEWS
+++ b/NEWS
@@ -9,6 +9,8 @@ PHP                                                                        NEWS
     (ilutov)
   . Fixed bug GH-17376 (Broken JIT polymorphism for property hooks added to
     child class). (ilutov)
+  . Fixed bug GH-17913 (ReflectionFunction::isDeprecated() returns incorrect
+    results for closures created from magic __call()). (timwolla)
 
 27 Feb 2025, PHP 8.4.5
 
diff --git a/Zend/zend_closures.c b/Zend/zend_closures.c
index 049c026845b1c..6ad2f6ac40246 100644
--- a/Zend/zend_closures.c
+++ b/Zend/zend_closures.c
@@ -361,11 +361,12 @@ static zend_result zend_create_closure_from_callable(zval *return_value, zval *c
 
 		memset(&call, 0, sizeof(zend_internal_function));
 		call.type = ZEND_INTERNAL_FUNCTION;
-		call.fn_flags = mptr->common.fn_flags & ZEND_ACC_STATIC;
+		call.fn_flags = mptr->common.fn_flags & (ZEND_ACC_STATIC | ZEND_ACC_DEPRECATED);
 		call.handler = zend_closure_call_magic;
 		call.function_name = mptr->common.function_name;
 		call.scope = mptr->common.scope;
 		call.doc_comment = NULL;
+		call.attributes = mptr->common.attributes;
 
 		zend_free_trampoline(mptr);
 		mptr = (zend_function *) &call;
@@ -871,7 +872,7 @@ void zend_closure_from_frame(zval *return_value, zend_execute_data *call) { /* {
 
 		memset(&trampoline, 0, sizeof(zend_internal_function));
 		trampoline.type = ZEND_INTERNAL_FUNCTION;
-		trampoline.fn_flags = mptr->common.fn_flags & (ZEND_ACC_STATIC | ZEND_ACC_VARIADIC | ZEND_ACC_RETURN_REFERENCE);
+		trampoline.fn_flags = mptr->common.fn_flags & (ZEND_ACC_STATIC | ZEND_ACC_VARIADIC | ZEND_ACC_RETURN_REFERENCE | ZEND_ACC_DEPRECATED);
 		trampoline.handler = zend_closure_call_magic;
 		trampoline.function_name = mptr->common.function_name;
 		trampoline.scope = mptr->common.scope;
@@ -879,6 +880,7 @@ void zend_closure_from_frame(zval *return_value, zend_execute_data *call) { /* {
 		if (trampoline.fn_flags & ZEND_ACC_VARIADIC) {
 			trampoline.arg_info = trampoline_arg_info;
 		}
+		trampoline.attributes = mptr->common.attributes;
 
 		zend_free_trampoline(mptr);
 		mptr = (zend_function *) &trampoline;
diff --git a/ext/reflection/tests/ReflectionFunction_isDeprecated_magic_call.phpt b/ext/reflection/tests/ReflectionFunction_isDeprecated_magic_call.phpt
new file mode 100644
index 0000000000000..fa63816c44ec7
--- /dev/null
+++ b/ext/reflection/tests/ReflectionFunction_isDeprecated_magic_call.phpt
@@ -0,0 +1,70 @@
+--TEST--
+GH-17913: ReflectionClassConstant::isDeprecated() with __call() and __callStatic()
+--FILE--
+<?php
+
+class Clazz {
+	#[\Deprecated]
+	function __call(string $name, array $params) {
+	}
+
+	#[\Deprecated("due to some reason")]
+	static function __callStatic(string $name, array $params) {
+	}
+}
+
+$foo = new Clazz;
+$closure = Closure::fromCallable([$foo, 'test']);
+
+$rc = new ReflectionFunction($closure);
+var_dump($rc->getAttributes()[0]->newInstance());
+var_dump($rc->isDeprecated());
+
+$closure = $foo->test(...);
+
+$rc = new ReflectionFunction($closure);
+var_dump($rc->getAttributes()[0]->newInstance());
+var_dump($rc->isDeprecated());
+
+$closure = Closure::fromCallable('Clazz::test');
+
+$rc = new ReflectionFunction($closure);
+var_dump($rc->getAttributes()[0]->newInstance());
+var_dump($rc->isDeprecated());
+
+$closure = Clazz::test(...);
+
+$rc = new ReflectionFunction($closure);
+var_dump($rc->getAttributes()[0]->newInstance());
+var_dump($rc->isDeprecated());
+
+?>
+--EXPECTF--
+object(Deprecated)#%d (2) {
+  ["message"]=>
+  NULL
+  ["since"]=>
+  NULL
+}
+bool(true)
+object(Deprecated)#%d (2) {
+  ["message"]=>
+  NULL
+  ["since"]=>
+  NULL
+}
+bool(true)
+object(Deprecated)#%d (2) {
+  ["message"]=>
+  string(18) "due to some reason"
+  ["since"]=>
+  NULL
+}
+bool(true)
+object(Deprecated)#%d (2) {
+  ["message"]=>
+  string(18) "due to some reason"
+  ["since"]=>
+  NULL
+}
+bool(true)