diff --git a/__main__.py b/__main__.py
index 3639ccb..0598114 100644
--- a/__main__.py
+++ b/__main__.py
@@ -109,7 +109,7 @@ def deserialize_native(output: CodeWriter, arg_name, arg_type, null_check: bool
 
         tmp_name = arg_name.split("[")[0] + "Tmp"
         output.indent()
-        output.local_assign(tmp_name, f"new byte[input.readInt()]")
+        output.local_assign("byte[]", tmp_name, f"new byte[input.readInt()]")
         output.newline()
 
         output.indent()
@@ -217,7 +217,7 @@ def serialize_native(output: CodeWriter, arg_type: str, arg_name: str, null_chec
 
         output.indent()
         tmp_name = arg_name.split("[")[0] + "Tmp"
-        output.local_assign(tmp_name, f"this.{arg_name}.getBytes(StandardCharsets.UTF_8)")
+        output.local_assign("byte[]", tmp_name, f"this.{arg_name}.getBytes(StandardCharsets.UTF_8)")
         output.newline()
         output.indent()
         output.call("output.writeInt", f"{tmp_name}.length")
diff --git a/code_writer.py b/code_writer.py
index ab3d08f..97b000c 100644
--- a/code_writer.py
+++ b/code_writer.py
@@ -57,8 +57,8 @@ class CodeWriter:
         self.fd.write("} else {")
         self.indent_depth += 1
 
-    def local_assign(self, name: str, value: str):
-        self.fd.write("var " + name + " = " + value + ";")
+    def local_assign(self, object_type: str, name: str, value: str):
+        self.fd.write(object_type + " " + name + " = " + value + ";")
 
     def open_for(self, start: str, cond: str, stmt: str):
         self.indent_depth += 1