2 files changed, 9 insertions, 4 deletions
diff --git a/src/WebAssembly/Structure/Instructions/Instr.php b/src/WebAssembly/Structure/Instructions/Instr.php
index 18531c6..5f9cf29 100644
--- a/src/WebAssembly/Structure/Instructions/Instr.php
+++ b/src/WebAssembly/Structure/Instructions/Instr.php
@@ -12,7 +12,6 @@ use Nsfisis\Waddiwasi\WebAssembly\Structure\Instructions\Instrs\Parametric;
 use Nsfisis\Waddiwasi\WebAssembly\Structure\Instructions\Instrs\Reference;
 use Nsfisis\Waddiwasi\WebAssembly\Structure\Instructions\Instrs\Table;
 use Nsfisis\Waddiwasi\WebAssembly\Structure\Instructions\Instrs\Variable;
-use Nsfisis\Waddiwasi\WebAssembly\Structure\Types\RefType;
 use Nsfisis\Waddiwasi\WebAssembly\Structure\Types\ValType;
 
 abstract readonly class Instr
@@ -616,7 +615,10 @@ abstract readonly class Instr
     {
         return new Reference\RefIsNull();
     }
-    final public static function RefNull(RefType $type): Reference\RefNull
+    /**
+     * @param ValType::FuncRef|ValType::ExternRef $type
+     */
+    final public static function RefNull(ValType $type): Reference\RefNull
     {
         return new Reference\RefNull($type);
     }
diff --git a/src/WebAssembly/Structure/Instructions/Instrs/Reference/RefNull.php b/src/WebAssembly/Structure/Instructions/Instrs/Reference/RefNull.php
index 39d0f8f..ed5afff 100644
--- a/src/WebAssembly/Structure/Instructions/Instrs/Reference/RefNull.php
+++ b/src/WebAssembly/Structure/Instructions/Instrs/Reference/RefNull.php
@@ -5,12 +5,15 @@ declare(strict_types=1);
 namespace Nsfisis\Waddiwasi\WebAssembly\Structure\Instructions\Instrs\Reference;
 
 use Nsfisis\Waddiwasi\WebAssembly\Structure\Instructions\Instr;
-use Nsfisis\Waddiwasi\WebAssembly\Structure\Types\RefType;
+use Nsfisis\Waddiwasi\WebAssembly\Structure\Types\ValType;
 
 final readonly class RefNull extends Instr
 {
+    /**
+     * @param ValType::FuncRef|ValType::ExternRef $type
+     */
     protected function __construct(
-        public RefType $type,
+        public ValType $type,
     ) {
     }