diff --git a/ext/reflection/php_reflection.c b/ext/reflection/php_reflection.c
index f79d8a5181dda..778a7db9a8fec 100644
--- a/ext/reflection/php_reflection.c
+++ b/ext/reflection/php_reflection.c
@@ -6517,7 +6517,7 @@ ZEND_METHOD(ReflectionProperty, getSettableType)
 	/* Get-only virtual property can never be written to. */
 	if (prop->hooks && (prop->flags & ZEND_ACC_VIRTUAL) && !prop->hooks[ZEND_PROPERTY_HOOK_SET]) {
 		zend_type never_type = ZEND_TYPE_INIT_CODE(IS_NEVER, 0, 0);
-		reflection_type_factory(never_type, return_value, 0);
+		reflection_type_factory(never_type, return_value, 1);
 		return;
 	}
 
@@ -6527,7 +6527,7 @@ ZEND_METHOD(ReflectionProperty, getSettableType)
 		if (!ZEND_TYPE_IS_SET(arg_info->type)) {
 			RETURN_NULL();
 		}
-		reflection_type_factory(arg_info->type, return_value, 0);
+		reflection_type_factory(arg_info->type, return_value, 1);
 		return;
 	}
 
@@ -6535,7 +6535,7 @@ ZEND_METHOD(ReflectionProperty, getSettableType)
 	if (!ZEND_TYPE_IS_SET(ref->prop->type)) {
 		RETURN_NULL();
 	}
-	reflection_type_factory(ref->prop->type, return_value, 0);
+	reflection_type_factory(ref->prop->type, return_value, 1);
 }
 
 /* {{{ Returns whether property has a type */
diff --git a/ext/reflection/tests/gh19187.phpt b/ext/reflection/tests/gh19187.phpt
new file mode 100644
index 0000000000000..35a684aa6af73
--- /dev/null
+++ b/ext/reflection/tests/gh19187.phpt
@@ -0,0 +1,56 @@
+--TEST--
+GH-19187: ReflectionNamedType::getName() should not include nullable type
+--FILE--
+<?php
+
+class C {
+    public string|null $a {
+        set => $value;
+    }
+    public string|null $b {
+        set(string|null $value) => $value;
+    }
+    public string|null $c {
+        get => $this->c;
+    }
+}
+
+foreach ((new ReflectionClass(C::class))->getProperties() as $r) {
+    $type = $r->getType();
+    echo $type, "\n";
+    echo $type->getName(), "\n";
+    var_dump($type->allowsNull());
+    echo "\n";
+
+    $settableType = $r->getSettableType();
+    echo $settableType, "\n";
+    echo $settableType->getName(), "\n";
+    var_dump($settableType->allowsNull());
+    echo "\n";
+}
+
+?>
+--EXPECT--
+?string
+string
+bool(true)
+
+?string
+string
+bool(true)
+
+?string
+string
+bool(true)
+
+?string
+string
+bool(true)
+
+?string
+string
+bool(true)
+
+?string
+string
+bool(true)