diff --git a/build.xml b/build.xml
index a3de2ce..f5be54b 100644
--- a/build.xml
+++ b/build.xml
@@ -3,7 +3,7 @@
          basedir=".">
 
     <property name="VERSION"
-              value="5.18" />
+              value="5.19" />
     <property name="build"
               value="build" />
     <property name="temp"
diff --git a/src/classes/phpthumb/phpthumb.class.php b/src/classes/phpthumb/phpthumb.class.php
index ef70dd7..bc6ee7f 100644
--- a/src/classes/phpthumb/phpthumb.class.php
+++ b/src/classes/phpthumb/phpthumb.class.php
@@ -314,7 +314,7 @@ public function __destruct() {
 		$this->purgeTempFiles();
 	}
 
-	public function __set(string $name, mixed $value): void {
+	public function __set(string $name, $value): void {
 	}
 
 	// public: